Pay button missing
The PAY button is no longer available for my Apple Card for me to make a payment. Why is this?
iPhone 14 Pro Max, iOS 16
Please make sure your iOS is updated to the latest version.
Update iOS on iPhone - Apple Support
A forced restart may also be needed.
Force restart iPhone - Apple Support
A forced restart is more than just turning your iPhone off and back in. Please follow the steps in the support article I linked to.