If anyone is still having problems with their wallets syncing, try adding the nodes via the Debug Console.
In the wallet's menu, go to "Help -> Debug window" and then click on the "Console" tab. Try entering the following commands and wait a few minutes.
addnode 198.41.189.139 add
addnode 188.126.72.179 add
addnode 146.185.163.232 add
addnode 192.99.13.186 add
addnode 198.41.186.208 add
addnode 162.213.254.217 add
addnode 162.159.248.159 add
addnode 5.250.177.28 add