The instructions provided by Quicken Alyssa appear to have fixed this

I was having the same problem. Even tried deactivating and re-activating online services on my 53 accounts (that didn't work).

As I was working through her procedure (not very far because I found the problem with her step 1), I noticed that one (only one) of my accounts had the Bank Bill Pay service turned on (I don't have this).

I'm not sure how that switch got flipped on as I've not looked at the online services for months prior to when the most recent connection problem happened.

At any rate, I turned that off and everything now downloads via direct connect as usual.