DCU IS CONVERTING TO PASSKEYS AND QUICKEN MAY HAVE A ISSUE. See below:
To use Quicken (personal bookkeeping), DCU supports Express Web Connect (Windows only) and Quicken Connect (Quicken for Mac). You will need to export to a CSV. If you are having issues with Quicken Express Web Connect, you should report it to Quicken Support directly,
https://www.quicken.com/support