Online Chess Rating Not Changing

Ok, so I don't know if there is an actual reason for this, but I just won an online chess game (correspondence) and my rating did not go up. I have also joined ChessKid.com as part of my school's chess club, and won a few games on time there, with my rating staying at 600.

I just don't know if there is a reason for this occurring, possibly something to do with rating differences, or if it's a bug. Is anyone else having a similar problem?

Your opponents rating is too low for your rating to change thats why

The game with Gomezgu ?  It was unrated: Unrated 

Oh was it? That explains why. Now I feel stupid

I'm not interested in paying for any coaching. I prefer to self-teach