The details you've provided really help me picture-out what is happening, mox.
Before we establish a new connection between your bank and QuickBooks Desktop, I'd recommend doing a few things to ensure that your company file is in a good condition.
- Update QuickBooks Desktop release version.
- Do the Verify and Rebuild process.
After those troubleshooting steps, we can attempt to reconnect your bank account.
Please let me know if you encounter any unexpected error so we can further review this.
