My American Express card is in my Apple wallet on my phone, but it will not load in my Apple Watch. When I open the Apple Watch app on my phone and go to the wallet, it shows that 2 of my cards are there, but the Amex has the word "add" next to it. When I try to add it by entering the security code, it tells me that the card is already in my wallet. Yes - it is in my main Apple wallet but not on my watch. Any suggestions? I figure I can remove the card and re-add it but I have heard of problems not being able to re-add cards. Thanks.