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://4c8635f108dae8a997697d9c22ddca36969e7f9bc57d9fc01102d7e7d9633231331ae7f7307aceb1aa19130b5bdd4afe397db616c76e7ffc1c69302ba0d09a39@45.32.182.61:53900", "enode://f019da062a635a4e9e89ec93edc7ca11c06fdfec0574f1cb001126a82dc6ffa6ca05f924a683934ff5d01fc5d4b0ac9507349a945c97121b2a355d39b1781cd7@104.238.157.156:53900"
]
6. Save the file. (If needed, you can always add new nodes in this file later on.)
7. Launch your wallet as usual.