You only can play with people that use EF. That's why the filter is enabled, if you disable it you'll recieve all the people that play vCoH and other mods online. Of course you can't play with neither of them. You are playing an unofficial expansion, it's not supported by relic in that field.If you wnat to play online, you can check on Play CoH mods channel (I don't remember well its name) or try to set up games using the forum as rally point.Cheers
[CoH:EF-Dev]Walki: BULLSHIT[CoH:EF-Dev]Walki: I'll eat a tree if this won't work now[CoH:EF-Dev]Rizz: ok[CoH:EF-Dev]Rizz: I'll hold you to it<10 minutes later>[CoH:EF-Dev]Walki: I think I really gotta eat a tree...[CoH:EF-Dev]Walki: got a decent one?
Sounds like you edited one of your CoH Files. The EF Installers does not alter any Vanilla CoH Files. If you use steam try using "Verify game cache".
Are you running vanillia in -dev?