I'm having the same problem. Not getting an answer.
Hello @Dwight10,
Thank you for reaching out to the Quicken Community, though I do apologize that you are experiencing this issue.
Before I can further assist you, I require some more information. What is your connection method with Capital One? You can see the connection method by navigating to Tools > Account List. What exactly occurs when adding your new credit card account? Are you able to choose to set up the credit card as a new account or is it only giving you the option to link to an existing account? Are you seeing any error codes or messages?
I look forward to your response.