Thank you for taking the time to visit the Community to post your issue although I apologize that you have not received a response.
As this is a Direct Connect error, the error is being sent from the financial institution. However, I would still recommend contacting support directly for help reviewing the logs.
https://www.quicken.com/support#contact-support
Quicken Care can help to locate the error in the logs to give you more information to provide the financial institution to help gain traction and get an escalation.
Thank you,
-Quicken Tyka