I have had the problem. Tried working it through with MD support but it was never resolved. A few months later I tried and it had started working. It stopped working again a few weeks back in Mid April.
If you haven't tried these steps, I would do this.
1.) Sign into your citi account (I just have credit card through Costco)
2.) Click on your profile and go to More settings.
3.) Click on Manage Desktop Apps (now have 10 minutes to do below)
4.) Go to Money Dance
5.) Set up Online Banking - set up new connection
6.) enter your user id and password
If it works, you won't get an error message - I still do.
Best of luck and if you find a different solution, please let us know.
So I had checked that and there doesn't appear to be an issue there-
Moneydance is listed as an authorized app and it shows the last successful
connect on 5.17.20 @ 2:13 pm.
Are you thinking that maybe I need to re-authorize it again?