I appreciate you sharing the steps you've taken to resolve this issue, @mark1231.
It'll absolutely help other users who might encounter the same error. Please know that you'll receive all available updates about this on-going investigation once you'been added to the list of affected users.
If you haven't yet, here's how you can contact our dedicated support:
- Go to Help.
- Tap Contact Us.
- Enter Unable to update my bank account in the What can we help you with? field.
- Click Let's talk.
- Select Get a callback, Chat, or Call us.
In case you need some related information, I've included this helpful article that'll guide you in categorising your transactions after uploading them: Download, match, and categorise your bank transactions in QuickBooks Online.
We thank you for your patience as we're working on this, please let me know in the comment section down below if you have any other concerns.
