Was able to get AOE 3 DE working single-player on the mac M1 by following these instructions (runs great): https://www.reddit.com/r/macgaming/comments/k3ac4y/aoe2de_on_osx_using_crossover/
But can’t seem to get multiplayer working. Every time I get in game I get an “Out of Sync” error.
Any thoughts? Would love to get in game 
So great to see the community alive!! Couldn’t have dreamed a such a positive end to 2020