HI!
When I play with my home-wifi connection I have no problems with the game.
But, when I play with my shared-mobile-wifi connection, i can't join games and no one can join my games.
I have not change anything else.
the message showing when i try to do it is:
"failed to connect to the server. this often caused by UPD port 20595 not being forwarded on the host side, by a firewall, or anti-virus software".