Whats the problem with player invite timing out
I am on Steam/PC and tried with my normal character that is at a 3-digit skill level and could get in a public game, was getting kicked every time, but when I switched to my other character at level 34, I was getting the same time out message and not able to join any maps.
The dev team could be testing things out as for as match maker goes and it is a little glitchy right now. They are trying to get an update that addresses the matchmaker issues and that could be a reason.
EDIT: I tried as host and players were joining my map with no problems.
If you are connecting from an invite try to do that by accepting invite and let the game start that way. Sometimes it will have problem connecting if you already are in the game.
For joining random multiplayer I have no solution