The worst. Blocked Kraken, and FTX deposits.

No issues with coinbase ACH, or with transfers in from other accounts and immediate buys

Got account shut down, after $500,000 in arbitrage activity. I think it was the international wires out that were the biggest issue. Was able to reopen account after a few weeks.

Doesn't allow debit card purchases at Bitstamp

They're ok with ach transfers and wire transfers.......but apart from that....you fucked son