Electrum didnt work for me at all. What I did in the end is deleting everything regarding XVG from the Roaming folder. I had no wallet file only paperwallet (private / public key). So I set everything back and started with a fresh wallet. Then I downloaded the chain from the official website  git and unzipped it as described. Then I started wallet and waited for a few remaining blocks to sync. Then I imported my public key via console, restarted, waited until the blocks were resynced and then I let the wallet read all tx via console again. Lots of work, not straight formward, but worked in the end.