Hi, @fcocervera .
Thanks for connecting with our network and sharing your question.
I appreciate how frustrating it must be to have Apple Pay not work on your site. I also realize you want to offer this gateway as an incentive for easy checkout to buyers so I’d be glad to guide you as best I can.
You did mention that you’re able to successfully use Apple Pay on other websites, but that it does seem to fail on yours. As others have been able to replicate this issue, I assume that the issue is with your Apple Pay gateway integration.
I want to clarify that Apple Pay is a third-party gateway and Shopify is unable to troubleshoot this on their behalf. With that being said, I recommend confirming your eligibility and then contacting Apple Pay Support directly.
I trust that provides further guidance.
Warm regards,