Hey Andrew. Welcome back

Can't help you with converting wallet POW to POS, never done that myself.
But to check your wallet go to the chain explorer:
https://chainz.cryptoid.info/nobl/Your wallet will show up here, with the current balance.
Thanks!
Neither of my wallet addresses show up there, I have a new wallet address though after doing that savagewallet thing not sure if that's supposed to happen either.