Sorry you're still having problems.  I have with other wallets in the past, not so much GP...

When you open the wallet, at the bottom of the window where the bars are, if you hover the mouse over that does it say you have no active connections?

I'm not at my PC that has my wallet but I found a screenshot that although it's old does show what I mean.



Bottom right, between the arrow and the tick.  (Just in case you didn't know what I was referring to, although I realise you probably did!)