Chess Mentor Bug?

I'm losing rating points in the android version of chess.com Apparently lessons with FREE MOVE results in an automatic 0% score!
Also, is there a way to reset my chess mentor stats because of this bug?

there is another bug, which involves having the "best move" not be the best move. I kind of wanted to try and get the highest possible chessmentor rating, and imagine my surprise when the best move scored from 0.4 to -0.15, but was the "chosen move". Um....,what? I strongly reccomend that chessmentor lesson creators check with a computer to see if their move is really best.