Hello @John W. Taylor
Thank you for reaching out to the Community regarding your issue, although I am sorry to hear that you are experiencing issues connecting to your FI. The issue could be related to the 501 error multiple Credit unions are experiencing but in any case I would recommend contacting Quicken Support directly for the best assistance. They'll be able to check logs to figure out where exactly the issue is coming from. I will leave our hours down below so you can find a time that works best for you.
Click here to review Quicken Support's hours of operation.
Thanks,
Quicken Francisco