This just happened to me too, last week had no issue buying on coinbase, this week I go to do the same thing, call my bank so they will unblock my card and they say some bs about having changed their policy, that it's a high risk, high-fraud transaction and that they won't do it. They also mentioned something about mastercard having something to do with it but not sure on that.
I was just so confused, like it's my money, I don't care if it's high risk, high fraud, thats what i want to do. Time to find a new bank in the short term, unless anyone knows an easier way to get fiat into crypto than coinbase. Such BS
I wonder if Credit Unions would be more ammenable to cryptocurrencies as they are cooperatives and the members could force the CU to allow it.
thats the plan!