Our higher team are saying can you try copying and pasting the URL from the bank into QB to check you are using the correct link - Santander business and personal is no longer supported is all so you need to make sure you are using the correct link for Santander and Cahoot (UK) - If you keep getting 571 this would suggest the account you are trying to connect is no supported anymore and you would then have to csv the transactions into QuickBooks instead.
