Terms and Conditions

1. Business information

Zentri is a software-as-a-service platform available through zentrigrading.app.

Zentri is a SaaS platform operated by a-ag, registered in the Netherlands with the Dutch Chamber of Commerce. Zentri is a registered trade name of a-ag. When you use Zentri Grading, create an account, purchase credits, start a subscription, or receive an invoice, your contractual and billing relationship is with a-ag.

2. What Zentri provides

Zentri Grading provides software tools for measuring trading card centering. The platform may include:

• card centering measurement tools;
• front and back side report generation;
• centering-only grade estimates;
• subscriptions with recurring credit allowances;
• one-time credit packs;
• limited-time unlimited access products;
• portfolio, collection, and report management tools;
• shareable report links where the user chooses to enable sharing.

3. No guarantee of professional grading outcome

Zentri reports evaluate centering geometry only. Reports and grade estimates do not evaluate surface condition, corners, edges, print defects, authenticity, restoration, trimming, damage, card alterations, or any other factor that may affect a final professional grade.

Any grade estimate shown by Zentri is informational only. Final grades from PSA, TAG, BGS, CGC, ACE, or any other grading company may differ.

4. Account registration

To use paid features, save reports, manage credits, access your portfolio, or use billing features, you may need a Zentri account.

You are responsible for:

• keeping your login details secure;
• keeping your account information accurate;
• all activity under your account;
• using Zentri only for lawful purposes;
• ensuring that your use of Zentri complies with applicable laws.

You can update account preferences from your profile settings. Certain account data, reports, and communication preferences may also be managed from your profile settings.

5. Credits, subscriptions, and unlimited access

Zentri may offer several types of paid access:

• one-time card credit packs;
• subscriptions with monthly card credits;
• limited-time unlimited access products.

Credits and access are applied according to the product description shown at checkout. Unless stated otherwise, one card credit is used for one completed centering report.

Subscription credit reset

Subscription credits reset with each billing cycle. Unused subscription credits do not carry over to the next billing cycle unless Zentri explicitly states otherwise for a specific subscription plan.

When a new billing cycle starts and the subscription payment is successfully confirmed, the subscription credit balance is renewed according to the active subscription plan.

6. One-time credit purchases

One-time credit packs are charged once and add the purchased number of credits to your account after successful payment confirmation.

One-time paid credits remain connected to your Zentri account until used, removed through account deletion, or otherwise handled according to these Terms and applicable law.

Paid credits are not a stored cash balance, bank balance, gift card, or financial instrument.

7. Limited-time unlimited access

Zentri may offer limited-time unlimited access products, such as a 30-day unlimited access pass. Unlimited access is active only for the stated period.

Unless explicitly stated otherwise, unlimited access products do not stack and do not automatically renew.

8. Payments and billing

Payments are processed securely through Stripe. Zentri does not store full card numbers on its own servers.

By purchasing a product or subscription, you authorize the applicable charge. For subscriptions, you authorize recurring billing until the subscription is cancelled.

Invoices, payment history, subscription management, and payment-method actions may be available through your account billing area or through Stripe-hosted billing pages.

9. Subscription cancellation and plan changes

You can manage subscriptions through your billing area where the relevant subscription features are available.

• cancel a subscription at the end of the billing period;
• keep a subscription if cancellation was scheduled;
• upgrade or downgrade according to the rules shown in your account;
• update your payment method through Stripe.

Cancelling a subscription does not automatically delete your Zentri account, reports, collections, or invoice history.

If you want to delete your account while a subscription is active, you may need to cancel the subscription first so that no future subscription charges are created.

10. Failed payments

If a payment fails, your account may enter a payment retry or grace period, depending on Stripe’s billing process and Zentri’s subscription rules.

During a failed-payment period, subscription access may be limited, paused, cancelled, or expire if payment cannot be completed.

You can update your payment method through the billing area or Stripe-hosted billing portal where available.

11. Refunds

Digital credits, generated reports, subscriptions, and unlimited access products are normally provided immediately or shortly after purchase. Because of this, purchases may be non-refundable once access, credits, or report-generation rights have been delivered, except where a refund is required by applicable law.

If you believe a charge was made in error, contact Zentri support at: support@zentrigrading.app.

12. Report ownership and sharing

Reports created in your account are private by default unless you choose to enable sharing.

If sharing is enabled for a report, anyone with the correct share link may be able to view that report. You are responsible for deciding whether to share a report link.

You can disable sharing where the feature is available.

13. Uploaded images, generated images, and report data

When you upload or generate card images and reports, you confirm that you have the right to use those images and data.

You may not upload content that is illegal, harmful, infringing, abusive, misleading, malicious, or designed to interfere with the service.

Zentri may remove content or suspend access where necessary to protect the platform, comply with law, or prevent abuse.

14. Deleting reports and account data

You can delete saved reports from your profile settings.

You can also delete your account from your profile settings. Account deletion removes your account and associated data, except data that Zentri must retain for legal, tax, audit, invoice, payment, dispute, fraud prevention, or accounting obligations.

15. Communication preferences

You can manage optional communication settings, such as marketing emails, promotional emails, product updates, and low-credit reminders, from your profile settings.

Transactional, billing, security, or legally required messages may still be sent where necessary to operate your account, process purchases, maintain security, or comply with law.

16. Service availability and changes

Zentri aims to keep the service available, but uninterrupted access is not guaranteed. Maintenance, technical issues, third-party services, hosting issues, payment provider outages, or security actions may affect availability.

Zentri may update, improve, limit, suspend, or discontinue features where necessary.

17. Acceptable use

You agree not to:

• misuse the service;
• attempt to bypass payment, credit, or access checks;
• interfere with security or system operation;
• scrape, reverse engineer, overload, or abuse the platform;
• use the service for unlawful purposes;
• upload malicious files or code;
• attempt to access another user’s reports, account, or private data.

18. Limitation of liability

To the maximum extent permitted by law, Zentri is not liable for indirect losses, lost profits, lost sales, loss of card value, failed submissions, grading differences, marketplace disputes, or reliance on grade estimates.

Zentri’s tools are informational and should not be treated as a substitute for professional grading, inspection, authentication, or valuation.

19. Third-party services

Zentri uses third-party services where necessary to operate the platform, including payment processing through Stripe. Your use of payment features may also be subject to Stripe’s terms and policies.

20. Changes to these Terms

Zentri may update these Terms from time to time. The latest version will be posted on this page. Continued use of the service after changes means you accept the updated Terms.

21. Governing law

These Terms are governed by the laws of the Netherlands, unless mandatory consumer protection laws provide otherwise.

22. Contact

For questions about these Terms, billing, or your account, contact: support@zentrigrading.app