For AI agents: the complete documentation index is available at https://docs.clickmax.io/en/llms.txt, the full documentation bundle is available at https://docs.clickmax.io/en/llms-full.txt, and this page is available as Markdown at https://docs.clickmax.io/en/faq/payments/one-click-buy-repeat-purchase.md.
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      • What is the "One Click Buy" feature in Clickmax?

      One Click Buy lets a customer who has bought before complete a new purchase in a single click, reusing the payment details from the previous transaction instead of entering them again. That reduces friction at the checkout and increases conversion.

      If it didn't work

      • The customer is new, or paid a different way last time: with no previous transaction saved, the one-click button does not appear and the normal checkout is shown.
      • The seller is not set up yet: see seller registration.
      • The payment was declined on the repeat purchase: check the error codes.
      • The customer already paid for the same offer in the last 48 hours: the checkout blocks the new payment to avoid charging twice. They can buy it again once 48 hours have passed since the paid purchase.