I used Kraken to convert CHF Swiss Franks to crypto because of it being 4 times less expensive then using other exchanges where I would need to pay my bank fort 1% to change my CHF to Euros or dollars then send the dollars to other exchanges and convert them there into crypto quantity. And out of the blue Kraken just closed my account, won't let me login to check of I still have leftover quantity and also won't let me appeal. Doest give a reason to why the account was closed. Even better still sends automatic marketing emails for me to come back since I haven't logged in for a while.