The only reason I could see why this would happen is the following:
- Your using status moves that match the opponents type
(Will-o-wisp on a Fire Type or Sleep Powder on a grass type)
- The opponents ability prevents status
- Its a early game Glitch, remember Gamefreak are just getting into the swing of programming.
EDIT: Speed Freak had the same problem here and some answered saying it may of been a glitch.
If its none of these then i'm not sure :/