Thank you for your feedback. If you haven’t already, Please update Samsung members app to latest version from galaxy store and send us an error report from the Samsung member’s app -> Beta Feedback -> Error Reports to help us debug the issue. We apologize for the inconvenience and appreciate your contribution to the beta program.
You have to completely sign out of your Samsung account on the device itself and sign back in. I had this same issue. Should resolve. The downside is having to reactivate credit/debit cards in Samsung pay again
Settings> Accounts and backup> Manage accounts> (Samsung account)> remove account
