Thanks for posting you concern in the forum. Interruptions to the Online Banking feature can be caused by a number of technical reasons, Tom.
This includes a required bank re-authorization, site maintenance or outage, and browser issues.
Aside from that, this also happens if your financial institution has posted a new security alert, terms of service update, or privacy notification that you need to manually acknowledge by logging in directly.
If the accounts are in the same bank, log in directly to their website outside of QBO. Make sure to use the exact same user ID and password that QBO uses.
Then, look for any alerts, pending security messages, new terms of service, or Multi-Factor Authentication (MFA) prompts that require a click or confirmation.
If there isn't anything on their side, manually update the bank feed during off-peak hours (very early morning or late at night) when the servers are less busy. Follow the steps in this article on how to do it: Use automatic and manual online banking updates.
Just make sure to always use a supported, up-to-date browser while performing any banking updates. This is essential to ensure a clean connection and prevent browser conflicts from blocking the download.
If you aren't able to resolve your issue using the steps on this page, check our Bank Feed Status page to see if it's an ongoing issue.
Just in case you're still not getting new transactions, you can manually import the missing transactions so you can add and categorize them in QBO.
Check out these articles for step-by-step guidance:
The Community forum is always here, just in case you need anything else.