Hey, new to samsung. I just found out about samsung pay and successfully registered an Amex card. But then when I unsuccessfully attempted to register a chase card (i know, not supported), my Amex card disappeared. I had to re-register the card. Then I tried to add another unsupported card and the amex card disappeared again. Anyone else having this problem? I'm getting tired of calling amex to verify the card over and over. THANKS!