> It is serious enough that they are closing all your accounts.

"serious enough" can literally be buying crypto at a legitimate, regulated exchange.

The AML regulations are vague enough that banks do everything possible to cover their ass, and when they've got millions of customers, the few that have even slight indicators of risky activity are cheaper to ban than to investigate appropriately.

It sounds like they "locked" the account. It should be time to see a lawyer now, depending on the balance.

Yes, I wrote the first part in the description above. I will definitely need a lawyer if it happens at other banks.