Hi Phil,
Thanks for checking in. I ended up submitting a ticket for it and it got resolved, but I forgot to post the info here, so here it goes....
The issue was from a bug in Survey123 where if you add a new question, within a repeat, in an already published survey, the updated survey won't publish. The workaround, until the bug is fixed in a future release, is to create a dummy question outside of the repeat, then publish (it will work then) and then you can delete the dummy question and republish.
-Tara