You triggered a fraud/compliance issue. It is serious enough that they are closing all your accounts.
If other banks also start closing your accounts, it may be time to find a lawyer.
If other banks also start closing your accounts, it may be time to find a lawyer.
"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.
Edit: why disagree?