Okay :
1-. Enter to this IP us.mcgamer.net , if you are from US , in this one , eu.mcgamer.net , if you are from Europe , in this another one , ca.mcgamer.net , if you're canadian , and in au.mcgamer.net if you are from Australia
2-. You spawn in the main hub , and for join sg you need to right click your compass and then click in the bow
3-. It will teleport you to another mini hub. You'll see a lot of signs , just click in one and you will join a game
Good luck! :3