Hello there, @lewitz. 

I recognize the need to connect both accounts in QuickBooks Online properly. Let me share some information on how to link your second account successfully. 

We can do some troubleshooting steps to help resolve this issue. Browsing in incognito or private mode will separate your record of your history, cookies, or other temporary data saved on your device. We can use these keyboard shortcuts to navigate to these mode easily.

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

You can refer to this article for guidance on reviewing your downloaded credit card transactions: Categorize online bank transactions in QuickBooks Online.

Feel free to get back to us if you need more help about connecting your credit card account. We're always glad to assist you.