We value your experience, JCamp. I understand the urgency of resolving this matter promptly, ensuring you can seamlessly continue your tasks without disruptions.

Upon checking here, we have an ongoing investigation (INV-112237) where customers encounter the same Error 590 you received. Our engineering team is actively working on resolving this issue to ensure your business operations resume without delays.

I recommend contacting our QuickBooks support team to be added to the list of affected users. It will also ensure you receive email updates about the investigation.

To reach our support team:

1. Hover over to the Help menu and press the Search tab. 
2. Click Contact Us, then choose Using QuickBooks. 
3. Hit Continue.
    

If you need to access your transactions immediately to proceed with your tasks, consider manually uploading them. However, this may result in duplicates once your connection is restored. 

I can imagine how this must feel, and I appreciate your patience as we work through this. Tell me how it goes after contacting our QuickBooks support. I want to help you move forward for your business success, JCamp.