I had my bank account connected but recently tried to reconnect tried every thing deleted and reconnect still won't connect can you help?

Let's run some troubleshooting steps to isolate the issue, mattround2-1.

Before doing so, can you tell me the name of your bank's institution? This way, I can check on my end for any ongoing issue with regards to your bank.

In the meantime, let's try connecting your account on a private window. It is the best place to identify any browser-related issues. You can use these keyboard shortcuts to open one:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N

If it works, you can go back to a regular browser and clear its cache. A piled cache can also be the reason for some unexpected error on the opened pages.

You can also switch to a different browser like  Google Chrome, Mozilla Firefox, Safari, or Microsoft Edge as alternative.

Once connected, you can categorise the transactions. I've added this article as your reference: Categorise and match online bank transactions in QuickBooks Online.

Let me know how these steps work on your end. Keep safe!