How to add my American express

This link will walk you through the steps --> Set up Apple Pay on Apple Watch - Apple Support

Hello ~ Any help here by clicking on and working through the link below?

Set up Apple Pay - Apple Support

Post back if needed. Take care.

~Katana-San~

And specifically for American Express, it can be added in the AMEX app. Here are the instructions from American Express:

https://www.americanexpress.com/uk/customer-service/faq.how-to-use-apple-pay-with-my-card.html#:~:text=The%20quickest%20way%20to%20add,to%20your%20Apple%20Pay%20wallet.