NBA MObile can't earn XP

[DKazplayer7]

So I hit level 50 and now cannot earn any XP 

this is really not fair.  If I want to play extra I have to buy stamina because it no longer gives me XP even though I'm earning it in game.  This needs fixed.

come on man.  This game could be fun if I could reach level 500 before it no longer gives me XP points.  Very dissatisfied.  It's a money maker for ae.