Terms of Service

Article 1 (Purpose)

These terms and conditions stipulate the terms and procedures for using the online learning platform service (hereinafter 'Service') provided by Quantum Jump Club (hereinafter 'Company'), the rights and obligations of the Company and users, and other necessary matters.

Article 2 (Definitions)

The definitions of terms used in these terms and conditions are as follows:

1. "Service" refers to all related services provided by the Company, including online educational content, community, automation scenarios, etc.
2. "Member" refers to a person who agrees to these terms and conditions and enters into a service agreement with the Company.
3. "Subscription" refers to a paid plan that allows members to use the service for a certain period.
4. "Paid Video" refers to lecture videos, class replay videos, and membership videos (VOD) to which a member has obtained access rights by paying a fee. Videos made available free of charge are not included.
5. "Playback Device" refers to a browser-level usage environment that a member uses to play Paid Videos. Even on the same phone or computer, a different browser, or a browser whose stored data (cookies) has been cleared, may be recognized as a different Playback Device.
6. "Account Sharing" refers to a person other than the member using the Service through the member's account, and includes transfer, lending, sale, and joint use, regardless of whether any consideration is received.

Article 3 (Posting and Amendment of Terms)

① The Company posts these terms on the initial service screen or a linked screen. ② The Company may amend these terms to the extent that doing so does not violate relevant laws. When amending these terms, the Company will state the effective date, the changes, and the reasons, and post them on the service notice board together with the current terms from 7 days before the effective date until the day before the effective date. ③ When amending these terms to the disadvantage of members, the Company will post the amendment from 30 days before the effective date, show the content before and after the change side by side, and notify members separately at the email address they registered (or by text message if no email address is registered). ④ If, when giving notice under paragraph 3, the Company clearly states that "a member who does not express refusal by the day before the effective date will be deemed to have agreed to the change," and the member does not express refusal by then, the member is deemed to have agreed to the amended terms. ⑤ A member who does not agree to the amended terms may terminate the service agreement by the day before the effective date. In this case, the Company will not charge a cancellation penalty and will refund the amount already paid, deducting only the amount corresponding to the portion used up to the termination date.

Article 4 (Membership Registration)

Membership is established when the user agrees to these terms, enters membership information, and the Company approves.

Article 5 (Account Management and Prohibition of Account Sharing)

① An account may be used only by the member. Members must not engage in Account Sharing, such as transferring, lending, or selling their account to another person or using it together with another person. The same applies to brokering or advertising Account Sharing. ② Members must securely manage their account ID, password, and the email or social account linked to their login. ③ If a member becomes aware that their account has been stolen or is being used by another person, the member must notify the Company immediately and follow the Company's guidance. Where the member has so notified the Company, access records arising for that reason will not be used against the member in determining usage restrictions under Article 11.

Article 6 (Service Usage)

Members may use the service according to the usage policy set by the Company. Service hours are in principle 24 hours a day, year-round, but may be restricted exceptionally when necessary, such as system maintenance.

Article 7 (Playback Devices and Concurrent Playback of Paid Videos)

① A member may register and use up to 2 Playback Devices per account for Paid Videos, and may play only 1 Paid Video at a time. If a Paid Video is playing on another Playback Device, a new playback will not start. ② A Playback Device on which no Paid Video has been played for 30 days is automatically removed from the registered count. ③ Members may remove registered Playback Devices themselves on the settings screen, up to 2 times in 30 days. A Playback Device removed by the member, or removed by the Company under Article 11, cannot be registered to the same account again for 30 days from the date of removal. A Playback Device automatically removed under paragraph 2 is not subject to this restriction. ④ If a removal beyond the scope of paragraphs 1 to 3 is needed for unavoidable reasons such as device failure, loss, or replacement, members may request it through the channels in Article 12, and the Company will verify the reason and assist with the removal. ⑤ The restrictions in this Article apply only to the playback of Paid Videos. They do not apply to class materials, assignments, community use, or login.

Article 8 (Identity Verification for New Playback Devices)

① To play a Paid Video for the first time on an unregistered Playback Device, a member must verify their identity by entering, on that Playback Device, a verification code sent to the email address registered to the member's account. ② A verification code is valid for 10 minutes after it is sent, and after 5 incorrect attempts a new code must be requested. The Company may limit the number of verification codes sent to prevent abuse, and when a limit applies, will show on screen the time at which a new code can be requested. ③ A member whose account has no registered email address may register a Playback Device without the verification in paragraph 1. In this case, the registration is used only as reference material for the misuse detection under Article 10 and does not by itself restrict use. ④ If the verification code email does not arrive, please check your spam folder; if you still do not receive it, you may contact the channels in Article 12.

Article 9 (Personal Identification Marking)

① To prevent unauthorized recording and distribution of Paid Video content, the Company faintly overlays the member's name, the last 4 digits of the member's mobile phone number, and a member-specific account code on the Paid Video playback screen, and the position of the marking changes at regular intervals. The remaining digits of the mobile phone number are masked. ② This marking appears only on that member's own screen and is not visible to other members. The Company does not collect separate personal information for this marking and uses the information the member provided at registration. ③ Members must not cover, remove, or tamper with this marking. If a recording bearing this marking is found externally, the Company may take measures under Article 11 against the account concerned based on the marking.

Article 10 (Detection of Misuse)

① To prevent Account Sharing, the Company automatically analyzes the following information related to Paid Video playback: Playback Device identifiers, browser and operating system types, access region (city level), playback rejection records, and verification code request records. Details of the processing are disclosed in the Privacy Policy. ② The Company regards the following as signs of suspected Account Sharing: 1. Access from different Playback Devices occurring within a short time from regions too far apart to realistically travel between 2. Playback being repeatedly rejected within a short period because playback is in progress on another Playback Device 3. Attempts to play from multiple Playback Devices beyond the registration limit 4. Verification codes being requested from multiple Playback Devices within a short period ③ The specific thresholds used to assess these signs are not disclosed because they could be exploited to evade detection. However, members may request an explanation of the reasons for a determination applied to them under Article 12.

Article 11 (Usage Restrictions)

① If a member violates Article 5(1), Article 9(3), or Article 15(2), or if signs of suspected Account Sharing under Article 10 are confirmed, the Company may take measures in the following order: 1. Warning: On first confirmation, the Company issues a warning. The warning is given by an on-screen notice the next time the member enters the service and by email, and does not restrict use. 2. 24-hour playback restriction: If confirmed again within 90 days from the date of the warning, playback of Paid Videos is restricted for 24 hours from that time. The reason for the restriction and the time it will be lifted are notified immediately on the playback screen and by email. 3. Fixed-term restriction or termination of the service agreement: If the same conduct is repeated after a 24-hour playback restriction, if a recording has been distributed, or if the account has been sold or lent for consideration, the Company may impose a playback restriction for a fixed period of up to 30 days or terminate the service agreement. ② Measures under paragraph 1, item 3 are taken only after a person has reviewed the facts. Before taking such a measure, the Company will individually notify the member of the reason and the measure, and will give a period to explain of at least 7 days for a fixed-term restriction and at least 30 days for termination of the service agreement. However, if a recording is being distributed and the damage continues to grow, the Company may first stop playback and then give the member an opportunity to explain. ③ Usage restrictions apply only to playback of Paid Videos; members may continue to participate in live classes and use class materials, assignments, and the community. However, if the service agreement is terminated, all use of the service under that agreement ends. ④ Measures under paragraph 1, items 1 and 2 are determined automatically by the Company's system. Members may request a review by a person under Article 12. ⑤ Refunds in connection with usage restrictions and termination follow Article 14, paragraphs 2 to 4.

Article 12 (Objections and Remedies for Erroneous Measures)

① A member who objects to a measure under Article 7, Article 8, or Article 11 may raise an objection, or request an explanation of the reasons for the measure, through the KakaoTalk channel (pf.kakao.com/_xnfDyG) or by email (news@quantumjumpclub.com). These channels are shown together on the Company's notice screens and emails. ② The Company will have a person review the objection and notify the member of the result within 3 business days from the date it is received. Objections received during a 24-hour playback restriction will be handled within the restriction period where possible. If processing is delayed, the Company will notify the member of the reason and the expected processing date. ③ If the review confirms that the use was the member's own, the Company will delete the warning and restriction records concerned and immediately lift any remaining restriction. For products with a fixed usage period, the usage period will be extended by the length of the restriction. ④ When raising an objection, members may submit materials explaining their usage environment (for example, business travel, using a phone and a laptop together, or using a VPN), and the Company will take them into account.

Article 13 (Payment and Subscription)

Payment for paid services is processed through payment methods provided by the Company, such as credit cards and simple payments. Subscription services are automatically renewed on a designated periodic basis, and members can cancel their subscription before the renewal date.

Article 14 (Withdrawal of Subscription and Refunds)

① The standards for withdrawal of subscription and refunds follow the separate Refund Policy page. ② Warnings and 24-hour playback restrictions under Article 11, paragraph 1, items 1 and 2 are not grounds for a refund, and the usage period is not extended. However, if Article 12, paragraph 3 applies, that paragraph governs. ③ If the Company terminates the service agreement because of a member's violation of these terms, such as Account Sharing, the Company will refund the amount actually paid minus the amount for the portion used up to the termination date and 10% of the remaining fee. If the Company proves that it has suffered damage exceeding this deduction due to the member's violation, it may separately claim compensation for that damage. ④ Where relevant laws or the Consumer Dispute Resolution Standards set standards more favorable to members, those standards prevail.

Article 15 (Intellectual Property)

① Copyright and intellectual property rights for all content within the service (videos, text, images, software, etc.) belong to the Company. Members may not reproduce, distribute, publicly display, or create derivative works from content without prior approval from the Company. ② Members must not save Paid Videos by screen recording, filming, downloading, or other means, or pass on playback addresses or playback screens to other people.

Article 16 (Notices to Members)

① When the Company notifies an individual member, it sends the notice to the email address registered by the member. Members without an email address are notified by text message to their registered mobile phone or by an on-screen notice in the service. ② When notifying all members, the Company may replace individual notice by posting on the service notice board for at least 7 days. However, matters that significantly affect members' rights and obligations are notified individually by the method in paragraph 1.

Article 17 (Limitation of Liability)

① The Company is not responsible for service disruptions due to force majeure such as natural disasters, wars, or service suspension by telecommunications providers. ② The Company does not intervene in disputes between members or between members and third parties and is not responsible for them. ③ Paragraphs 1 and 2 do not apply to damage caused by the Company's intent or gross negligence.

Article 18 (Dispute Resolution)

In case of disputes arising from service use, the Company and members shall endeavor to resolve them amicably through mutual consultation. If consultation fails, either party may bring a claim before a court having jurisdiction under applicable law.

Addendum

Article 1 (Effective Date) These terms take effect on November 10, 2026. Article 2 (Transitional Measures) ① Notices concerning Account Sharing sent by the Company before these terms take effect are not regarded as warnings under Article 11, paragraph 1, item 1. For signs of suspected Account Sharing first confirmed after these terms take effect, measures apply starting from a warning under Article 11, paragraph 1, item 1. ② For members who entered into a service agreement before these terms take effect, these terms apply after the notice and periods under Article 3, paragraphs 3 to 5 have passed.