I have some information about authorizing bank connections. To verify, are there any messages attached about the account authorization? I appreciate it if you can share it with us or attached some screenshots. This way, we can start our troubleshooting,
Meanwhile, you'll want to log in to your bank's website outside of QuickBooks and check if there's a notification that you'll need to click on to stop it from asking again.
Additionally, you can contact your bank to seek assistance in turning off the authorization steps.