Yep it’s in TransferWise Terms of Service. You can’t use their service to send money anywhere for crypto related anything. So no card payments or bank transfers to exchanges or intermediaries, they will close your account immediately if they think those terms are breached.
Its a big security/forex broker like interactivebrokers or Charle Schwab and they support crypto, same way as kraken yes.
but they have a banking license so you get a bank account with your trading account, with some restrictions i think but still very good.