I've gone to advanced>Gameplay Constants
and changed the hero lvl cap to 12 (10 originally) still isn't going beyond 5.
Btw, it's a custom hero (Medivh - Hero) and it won't just gain exp at 5:banghead:
Custom game play constants need to be allowed, then remove the creep reduction exp gain (alternatively, raise it to something very high like 9999).
Its nothing to do with the creeps level, its a function in regular ladder games that simply stops you from killing neutral units to get a hero able to cast their ultimate.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.