Ok. Because all want know, i'll write it here.
check AcceptBattlefieldPort is disabled on your server. Open developement tools and run C# code
Battleground.JointBattleGroundQueue(32); // this is random BG
Thread.Sleep(1000);
Battleground.AcceptBattlefieldPortAll();
This starts BG queue, and should accept BG when it ready. If it works, you need no any modifications. If not accepts, LUA function AcceptBattlefieldPort is disabled on your server or works unstable. So, go to step 2
download and install dnSpy
in dnSpy open wManager.dll and find method AcceptBattlefieldPortAll
right click and run menu item "Edit Method (C#)". You will see obfuscated code, but no problem. Find string with Battleground.AcceptBattlefieldPort and comment it
compile and save.
Voila, now your battlegrounder will accept BG with Battlegrounder helper plugin, because it uses alternative method.
Dont update your robot, or do this steps after every update
