is this the same pwr coin as in yobit?
Yes but I think you cannot withdraw from there. The coin has forked so its a different chain now. You can buy but never withdraw.
My understanding is that you should not use Yobit for PWR - different chain. There was a fork, and Yobit is still on the old one.
Correct Yobit is on the old chain. We hard forked on 12 May 2018 with v2.0.1.0
Anyone who upgrades now will need to re-sync the blockchain and forfeit their staking rewards since 12 May.