How do I fix the server signaling problem?

I use the signaling server as "wss://multiplayer.scirra.com" and i tested a few and i found a problem when using mobile data doesn't seem to send or receive messages.

When using WI-FI from a provider it works great,First a thout my game had a problem and it only LAN game but a friend help me from his house and when we tested it worked.I don't know how to fix this problem so the can be played using mobile Data.

This is not to do with the signalling server, it's to do with the peer-to-peer connections between devices. See the section on connectivity in the multiplayer tutorial.