I can’t connect to the bank (error code 590) any ideas where to go from here?

Welcome to Community, @userscaustinwork.

I have some information about the error code 590. You'll encounter this error if your Financial Institution updated their bank's website. You'll want to update your bank account in QBO. Let's go to your banking page to see it.

Here's how:

1. In your account, go to Banking. Then, select Banking.
2. Highlight and tick your bank account.
3. Click the Update button in the top right corner.

With the above steps, QuickBooks will download transactions from your bank and will show in the For Review tab. From here you can decide whether or not to accept the transactions in the register. For details, you can check out this guide: Categorise and match online bank transactions in QuickBooks Online.

If you need help with other tasks in QBO, you can browse for specific topics here and look for responses that fit your concern.

Keep me posted if you still have questions or concerns with your downloaded transactions. I'm more than happy to answer them for you. Take care and have a good one.