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-for-upsells-and-downsells.md.
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      • Does "One Click Buy" work for upsells and downsells?

      Yes. On upsell and downsell pages, the customer accepts the extra offer with a single click, reusing the payment already made on the main purchase, without having to enter the details again.

      If it didn't work

      • The upsell/downsell offer is only presented as one click when it is part of the same funnel as the main purchase; check how the steps are chained in create a funnel.
      • If payment is being asked for again, review the product and offer settings in product offers.
      • Other billing problems: see error codes.