Well for me it was re-downloading the cfg files, and all the changes made in there were gone, only after disabling it the cfg files were left untouched.
Only way i found to make it work is not to have Validate Installation as True and then modify gamemode_XXXXXXXXXXX.cfg file depending on what game mode is set in GAME_PARAMS, the server name was albe to change from GAME_PARAMS using +hostname "Server Name".
Yeah, sorry,
Changed the title in \appdata\cs2\game\csgo\gameinfo.gi <- did not do anything.
Chnaged ConVars in \appdata\cs2\game\csgo_core\gameinfo.gi <- Same thing, nothing happening.
Am i missing something?