MP on Xbox S/X won't fill empty slots in MP and can't change networks for MP.

Hello,

I've been trying to switch to a new (advocate) network to earn bonuses in Happy Hour for Titanfall 2 MP, but it will not let me switch anymore.  Also, when playing MP, any empty slots would be backfilled with other players searching for matches, but that isn't happening anymore.  Thank you for your time.