i canmot record i don' t have camera, and i cannot download screen recorder, because my computer does not support any of those applications, so i'll take picture next time

I am beginner at this game, ans read some rules, and i know how to report with /vote offender, and I think that command is not working for me, one player was sabotating in our, he used twins and he was pushing our team, so i reported but nothing happened, i think its not working, and on loading screen it says, report offenders with /vote and moderator will come to rescue, but he didn't, the player continued sabotating. What was wrong?