Had trouble with my debit card yesterday as well. Was declined even tho we have a good balance. Went to bank and they said my card HAD NOT been compromised. They didn’t know what the prob was.
Now that you mention it...have problems with several credit cards and a debit card during the last few days.
I had trouble with mine at Cracker Barrel yesterday. It declined four times as debit even though I knew there was more than adequate funds in the account. Finally the person ran it as credit rather than debit and it went through.