I recently won a game in the commander legends draft league that started at 21:44 MST. My username on MTGO is unique_fossil. After winning (and confirming it is in my game log on MTGO) I closed MTGO and when I booted up the league the next day I receive a message:
UNABLE TO JOIN QUEUE. CURRENT MATCH PENDING. PLEASE WAIT A MOMENT BEFORE ATTEMPTING TO REJOIN THE QUEUE.
It has been nearly 24 hours since that game began