Payments and invoicing

Last updated: 8 September 2026

Who processes the payment

Stripe. The card never touches this site: the checkout page is Stripe's, and we receive only the result, the email address and the billing country.

Currencies

The English site charges in US dollars. The Spanish and Portuguese sites charge in euros. Your bank may convert, and that conversion is between you and your bank.

Invoices

Enter a VAT number at checkout and the invoice comes out with it. Without one, the receipt Stripe emails you is the proof of purchase. Ask us and we issue an invoice by hand.

Failed payments

If a payment is declined nothing is charged and no access is opened. A pending authorisation that your bank shows for a few days is released on its own.

Security

The site runs on HTTPS. Access to the lessons is a signed proof, not a password, and we store no card data at all because we never receive any.