Default node encoded on the wallet is off.

How to add a node and make the wallet synchronize.

on toolbar; click help then select debug window.
a popup window appears, select console.
On console,
type;
addnode 140.227.122.191:34621 add
addnode 66.228.57.25:34621 add
addnode 45.33.42.71:34621 add
addnode 45.79.201.204:34621 add
addnode 195.154.113.90:34621 add