Very strange, from looking at what I can query from the lobby on mobile, that part seems ok. So it probably comes down to the peer to peer connection between you. With the native version it could have been a problem with the webrtc libraries I shipped because the native versions were tested on only two systems. But I'm pretty sure I tested chrome and Firefox and the game would use their built in webrtc systems.
Did you get any error messages? Any antivirus or firewall that could block the connections?