I got an A+ thoughts? I call rubbish!

I played the Jinx, got an A+. It was supposed to be my window to level 7. This game that is. I think an A+ is simply absurd.

Also how do I upload a paint picture I can't figure it out. I snap shot it and downloaded it to my desktop. Idk how to post the proof.

The game was 22 mins. I went 9/0/4 as Jinx. I'm already level 6 before this game. I got an A+...