I'm originally from Malaysia and have recently moved to Germany, I used to use samsung pay all day everyday back in malaysia because cashless is king. Now that i've moved to Germany, I cant add my German bank account card, N26, to Samsung Pay. FIX THIS SAMSUNG
Note: Alternative use GPay that depends if the bank support GPay. If MST require then best to buy a phone in locally.
Second option is to reinstall the app and see if it works.