Hello there, @stockdale.
The possible reason why the bank stop syncing with QuickBooks is that the system has constantly updated. To fix this, let's perform some troubleshooting steps to sync your bank account with QuickBooks.
Let's update your bank account to isolate this issue. Here's how:
- On the left panel, click Banking.
- At the upper right side of the page, click Update.
- If prompted, enter your Multi-Factor Authentication (MFA) credentials and select Continue update.
I've got you an article for your reference: How to Manually Update Bank Accounts.
Then, if the issue persists after the manual update, you can read this article for more troubleshooting steps: Fix Online Banking Errors in QuickBooks Online.
In case you still get the same result, I encourage contacting our QuickBooks Customer Care. This way, they can investigate further why your bank account stopped syncing.
Please feel free to get back to us if you have other questions managing your bank account. We're always here to help.
