Looks like the identical thing happened to me. I noticed payouts were not coming in, and I see that my default payout was set to Payoneer, which I've never even heard about. No notifications at all in my email history. It's a big chunk of money for me, too. I've called Airbnb and requested urgent escalation, waiting for a callback from the payouts department.
Without any account info, I'm not sure how far I can get calling Payoneer. If anyone has any advice, please drop it here!