Just an update to close out this question.
Apparently, there is no 30-day delay for payouts to new hosts.
According to Airbnb, the reason we did not receive the payout was that we had set up our account so that the payouts were directed to my co-host (my husband) and he doesn't have any payout method set up. I have asked if there is a way to switch that to me. If not, we'll set it up for him to receive the money.
I don't recall having to choose who to make the payout to. Maybe it defaulted to him because we initially set up our listing via his account, then added me as co-host, then flipped it so I am the primary?
Of course, the obvious question now is, why didn't Airbnb notify him that they were unable to do the payout? He has checked his email and spam folders. Nothing. I guess that's a question for another day ...
Thanks everyone for your help. This community is invaluable!
Cheers,
-Kim