There's a chance that browser issues are preventing you from reconnecting your Monzo account, Adam.
Too much stored cache or issues within the browser can sometimes cause QBO to not properly load.
Have you tried using a different browser or switch to an incognito/private browsing session? If not, use these keyboard shortcuts to switch to incognito mode:
- Ctrl + Shift + N for Google Chrome
- Ctrl + Shift + P for Firefox
- Control + Option +P if you're using Safari
- Ctrl + Shift + P for Microsoft Edge
After that, go back and try if you can reconnect or renew the connection between your Monzo and QBSE accounts.
If it's successful, go back to the regular browsing session and clear your browsing history. Here's an article as a guide: Clear Cache And Cookies To Fix Issues When Using QuickBooks Online.
You might also be interested in checking out these articles in case you need more references while working in QBSE:
You can ask follow-up questions or submit new ones if you need anything else. The Community is always ready to help you all the time.
