Thank you for sharing your experience, @LSM5.

Please know that your concerns are valid, and I’m here to help you by sharing some insights about connecting your Citi cards in QuickBooks Desktop (QBDT).

It appears that the reason you’re unable to connect is due to a damaged company file since it works with a new file. I recommend contacting our support team again, as they can request assistance from our data service team to repair your company file.

You can check out these resources in the future to help you manage your transactions in QBO:

• Categorize online bank transactions
• Manually add transactions to account registers
• Exclude a bank transaction you downloaded

Please let me know if you have further questions about connecting your Citi card to QBDT. I'm here to help!