-If you're reporting a bug you need to put your IGN then select Bug and the explain what is the bug and if you can add some more proof with gyazo or video.
-If you'r appealing for an Unban you first put your IGN then you select Unban then you explain what happend:
1.For what did you get banned
2.Who banned you
3.Why do you think you sould get unbaned
4.Gyazo the ban schreen.
-If you'r reporting a player you need to put your IGN then select Report after that you need to explain how was he hacking and if you can provide some video or gyazo evidence.