I dont use bot to host a game, i host it on my own and most ppl get kicked and whisper to me "sc". I havent play wc3 2-3 years so could any1 tell me what is sc and can i somehow fix it?
There is nothing for you to fix if people are able to join your game, and since they (auto) whisper you "sc" they certainly are joined. Nothing is kicking them, they are probably just leaving on their own.
"sc" whisper is made automatically BY player's game launcher (gproxy) TO the creator of hosted game. Its nothing for you to worry or to think much about, as its only ment for hostbots to auto-spoof-check each joining player to confirm that they are not spoofing someone's else nick.