my game stopped progressing. (i think)

so ive played 3 or four levels and after each level it says i get experience, but when i check my stats, my experience hasnt moved. i am at level 18 and about four levels from the last boss. any advice?

heres how exp works: the BEST scores from each map/mode are added up, so you only get more exp when you improve upon your score. hope that helps :).

it does. thanks a lot. i just got a higher score on a level and got the exp.