I have followed every steps to create stripe credit card payment functionality with apple pay in my app. It is works fine for my xcode and merchant id/bundle id.
Add manually and test it. See screenshot
Have you created these certificates on your machine. If not then ask for p12 certificate. It will resolve your issue.
@AkshayPatil : You are facing this issue only because of wrong certificates or wrong process.
Just had this problem appear when I tried to add Apple Pay to my capabilities. Nothing really worked, except for disabling automatic signing, downloading a Development profile from developer.apple.com, importing it, having it error out, and then re-enabling automatic signing.
That made everything work again.