If you need to sync your wallet and are stuck, here is what you can do to add peers automatically at launch:
(this explaination is for Windows, but is similar on other OSes as long as you change paths and filenames accordingly)
1. Use Windows key+R to open the Run window.
2. In the Run window, type %appdata%\Shift to open the Shift data folder.
3. Right inside this folder, create a file called static-nodes.json
4. Open this file in your text editor.
5. Copy and paste this inside: (yes, including the brackets)
[ "enode://9852729849ab856e699af353159e781c780bac3d706da26ae41a64407b320f31c2f4a6fdee74d61ce0c9077a9a578503c8fe4e75722fc2e8ad1b97b8e823d20d@90.161.84.133:53900", "enode://dfac27f4e14600a06480ee72d2d9a28c26805ac8cbc31e1d07225a49d5669f54f97ff9d88c20cd9ec2f148c8cb64861820eee8d235b79a3edceec0648fa9376b@178.33.228.14:53900"
]
6. Save the file. (If needed, you can always add new nodes in this file later on.)
7. Launch your wallet as usual.