I was on route 9 and I ran into a Golett. I used my Skitty ( I was raising a May theme team) and I decided to used Assit on it. Water Pluse was used. It said "It had no effect." So I decided to used Blizzard, an Ice-Type attack. It said "It has no effect." I was confused so I just ran away. Was that normal? Please help me! Thank you!
Note: I don't think my Skitty is hacked. I caught it on route 4 at level 8. It also has a blue hexagon so I pretty sure it's real.