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These Terms of Service form a binding agreement between you (“Merchant” or “you”) and Louis Rapp EI, operating as Airdun (“Airdun”, “we”, “us”), governing your access to and use of the Airdun platform and all associated features, including recovery sequences, analytics, integrations, and related services. By creating an Airdun account or using the service in any way, you agree to be bound by these terms in full.

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1. The service

Airdun is a failed-payment recovery platform that connects to your Stripe account, identifies failed payments, and runs automated recovery sequences on your behalf. The service includes multi-channel outreach (email, SMS, WhatsApp, and in-app), smart payment retries, analytics, and reporting. Airdun is a tool for recovering revenue from your existing customers. It is not a collection agency, a credit product, or a payment processor. All payment retries are executed through your own Stripe account using Stripe’s official API.

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2. Eligibility and account registration

To use Airdun you must:
  • Be at least 18 years old (or the age of majority in your jurisdiction)
  • Have or create a valid Stripe account in good standing
  • Provide accurate and complete registration information
  • Have the authority to bind the business entity you register on behalf of
You are responsible for maintaining the security of your account credentials and for all activity that occurs under your account. Notify us immediately at hello@airdun.com if you believe your account has been compromised.

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3. Subscription and billing

Airdun charges a flat monthly fee based on your selected case-volume plan. Billing begins on the date your paid subscription activates.
  • No percentage fees — Airdun never takes a cut of recovered revenue. You keep 100% of every payment recovered.
  • No annual commitment — All plans are month-to-month. You can cancel at any time from your account settings.
  • No setup fees — There is no onboarding fee or integration charge.
  • Overages — If you exceed your monthly case limit by more than 10%, Airdun will notify you and ask you to upgrade your plan. Minor overages (up to 10%) are accommodated without additional charge or service interruption.
Payments are processed through Stripe. By subscribing you authorise Airdun to charge your payment method on a recurring monthly basis until you cancel.

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4. 30-day money-back guarantee

If the total revenue recovered during your first 30 days of paid use does not exceed your subscription cost, you are entitled to a full refund of your first payment. To claim the refund, email hello@airdun.com within 30 days of your first charge, including your account email address. This guarantee applies to your first billing period only. It covers your subscription fee — not potential recovery upside. Refunds are returned to the original payment method.

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5. Stripe access and acceptable use

By connecting your Stripe account to Airdun, you authorise Airdun to:
  • Read your payment, subscription, customer, and invoice data via Stripe’s API
  • Retry failed payments on your behalf through Stripe’s API
Airdun’s write permissions are strictly limited to payment retries. Airdun will not create new charges, modify subscription plans, issue refunds, or perform any other Stripe actions beyond retrying failed payments. You may revoke Airdun’s Stripe access at any time from Stripe Dashboard → Settings → Connect → Connected applications. Revoking access immediately stops all recovery activity. You agree not to use Airdun to:
  • Retry payments that are subject to dispute, chargeback, or fraud investigation
  • Harass or contact customers in ways that violate applicable law (including GDPR, CAN-SPAM, or equivalent regulations)
  • Circumvent Stripe’s terms of service or any applicable card network rules
  • Attempt to access, scrape, or interfere with Airdun’s systems beyond normal use of the platform

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6. Data and privacy

Airdun processes your data and your customers’ data solely to provide the payment recovery service. Full details of what data is processed, how it is protected, and your rights are set out in the Privacy Policy. Key points:
  • Airdun never stores full card numbers, CVCs, or bank account details
  • All data is hosted on Google Cloud in the EU (Paris region)
  • Customer data is deleted within 30 days of account closure
  • Airdun acts as a data processor for your customers’ data; you remain the data controller

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7. Intellectual property

Airdun and its licensors own all rights, title, and interest in and to the platform, including all software, algorithms, interfaces, and content. Nothing in these terms grants you any ownership interest in Airdun’s intellectual property. You grant Airdun a limited, non-exclusive licence to access and process your Stripe data solely for the purpose of providing the service to you. Airdun may use anonymised, aggregated signals derived from recovery activity across all accounts to improve its algorithm. No personally identifiable data from your account or your customers is shared with other merchants or used for any purpose other than improving recovery performance.

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8. Service availability

Airdun aims to provide a reliable, continuously available service. However, we do not guarantee uninterrupted access. We may perform scheduled maintenance with advance notice and will work to resolve unplanned outages as quickly as possible. Airdun is not liable for recovery revenue lost due to service downtime, provided we have acted reasonably to maintain and restore the service.

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9. Limitation of liability

To the fullest extent permitted by applicable law:
  • Airdun’s total liability to you for any claim arising from these terms or your use of the service is limited to the total fees you paid to Airdun in the 12 months preceding the claim.
  • Airdun is not liable for indirect, incidental, consequential, or special damages, including lost profits, loss of data, or business interruption, even if we have been advised of the possibility of such damages.
  • Airdun does not guarantee specific recovery rates or revenue outcomes. Recovery results depend on many factors outside Airdun’s control, including your customers’ payment behaviour and Stripe’s network signals.
Nothing in these terms limits liability for death or personal injury caused by negligence, fraud, or any other liability that cannot be excluded by law.

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10. Termination

You may cancel your Airdun subscription at any time from your account settings. Cancellation takes effect at the end of your current billing period; you retain access until then. No partial-period refunds are issued except where the 30-day guarantee applies. Airdun may suspend or terminate your account if you breach these terms, violate applicable law, or engage in behaviour that puts other merchants or customers at risk. In non-urgent cases, we will provide reasonable notice before termination. On termination, Airdun will stop processing your data and delete it within 30 days, except where retention is required by law.

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11. Governing law and disputes

These terms are governed by the laws of France. Any dispute arising from these terms or your use of Airdun will be subject to the exclusive jurisdiction of the courts of France. Before initiating legal proceedings, we encourage you to contact us at hello@airdun.com to attempt to resolve the matter informally. We will respond within 10 business days.

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12. Changes to these terms

Airdun may update these terms from time to time. When we make material changes, we will notify you by email (to your account address) at least 14 days before the changes take effect. Your continued use of Airdun after the effective date constitutes acceptance of the updated terms. If you do not agree with a change, you may cancel your account before the effective date.

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13. Contact

For questions about these terms, contact: Louis Rapp EI — hello@airdun.com 63 route de Laoureaux, 31590 Lavalette, France