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/how-one-click-buy-works.md.
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  • How does One Click Buy work in ClickMax?

    When the funnel has an upsell or downsell step after the main purchase, ClickMax reuses the buyer's details and the payment method they have just used. On the next offer they only confirm the purchase, with no need to fill in the checkout again.

    What the buyer sees for each payment method

    Previous purchaseUpsell and downsell
    Credit cardThe saved card (last digits) and the same number of instalments, when the offer allows it. They just click to buy.
    PIXThe offer opens on PIX. The code is only generated when the buyer clicks the button.
    BoletoThe offer opens on boleto. The boleto is only generated when the buyer clicks the button.

    If the next offer does not accept the payment method used before, the checkout opens on the first available method. The buyer can change it in Alterar forma de pagamento.

    If the offer allows fewer instalments than the buyer chose before, the checkout uses the highest number allowed.

    When the saved card is declined

    The checkout opens the card form so the buyer can use another card. When the offer accepts PIX, the message suggests paying with PIX.

    When One Click Buy is not available

    In these cases the upsell or downsell step asks for name, email, CPF and phone (and the address, when the offer requires it) before payment, and the purchase continues as usual:

    • The buyer opened the upsell or downsell page without having bought before in the same browser.
    • Too much time has passed since the previous purchase. The details stay available for a limited time after the purchase.
    • The funnel pages are on different domains. One Click Buy works when the main checkout page and the upsell and downsell pages are on the same domain.
    • The browser blocks the checkout data inside the funnel page.

    If it didn't work

    • The confirmation button only appears on the funnel's upsell/downsell steps; review how the funnel is built in Create funnels.
    • The upsell asked for the buyer's details again: check that the main checkout and the upsell are on the same domain and that the buyer went straight from the purchase to the upsell.
    • Check the seller registration so the charge can be processed, in Seller registration.
    • Errors when confirming the purchase: see the error codes.