I could not get this to work with Synchrony bank (in any of its forms), but then I typed in the account setup window "tjx" and "tjxrewards.com" pulled up. That did it. That allowed me to setup the card with quicken. Hope this helps someone else.
Hello @Michael in Texas,
Thanks for sharing your experience!
We appreciate you taking the time to share what worked for you—this could definitely help others who are facing the same issue.
Glad you were able to get it set up!