I told some of my friends that use aRev to join my 4D1 server but they couldn't. I do have set sv_master2 "master.alterrev.net" in my server.cfg but it doesn't help. My friend also has a 4D1 server but aRev players can join his.

 

Any help would be appreciated, thanks!

No support is given to people with their idiocy called aRev. Go ask their support.

 

And be smart, don't use our products in collaberation with their project.