So I use to be at about 700 or 800 then i logged in at my sisters place to play cultris and now im at 4000 or so. is there a glitch with logging in with another computer? shall i just play as a guest if im not on my main pc? thanks in advance.
No glitch. It's just because your Elo score fell below 75 points. Currently, players between rank 1150 and 3250 have exactly this score. If players don't play, their score changes slowly in this direction (you would rank up a little if you stopped playing). Note that only the Free For All room will affect your ranking.