Not sure if you solved this yet, but it took me a while to get mine synced too. The big thing for me, was time! As long as you have the conf file, and your firewall is allowing it, it should work. Leave it open for an hour or so, and see if it eventually connects, it'll try each node multiple times until it does. I left mine open, and left my PC for a couple hours, came back to a fully synced wallet.
Still desync.
I don't know ...
I am waiting from a while ... I was reconfigurating and stuff...
But nothing yet.
Before when I 1st made good .conf file it was connecting to nodes in seconds...
Anyway...
Now it can't connect to any node ...
Waiting...
for any answer