That's because you are voting too many times. Voting power is the way to control people's voting behaviour.
If your power is too low, your vote worth nothing.
You can slow down and wait. Maybe vote once or twice a day until your power recovers. It takes 5 days to get 0 to 100.
When you recovered, make sure you don't go under 80% each day so your power always remain strog.
Ok. I wasn't aware of these. So now i have to wait 5 days to recover it :(