Why is Authorize.net not processing Apple Pay on my store?

Hey, @UserAccount192 ! Welcome to Shopify Community!

If you’re unable to select Apple Pay as an accelerated payment method for Authorize.net, or any other gateway, there’s a possibility you don’t meet the requirements for using Apple Pay in your store. To see if this is the case, please feel free to go through the Apple Pay requirements below:

If you believe you meet the requirements but are unable to activate Apple Pay, we’ll need to access your account in order to investigate this issue. While we’re not able to provide account-specific support via the Shopify Community at this time, we’d be happy to continue assisting you through live chat, email, or callback. Please visit https://bit.ly/3cJkx8V and log in to your account to create a support request.