He do u add ur gender if u haven't when u set up?

Bottom left of your 个人资料 info is an 编辑 个人资料 button.

Click on "Edit Profile" then at the 最佳, 返回页首 it will say 1. Personal Information it's the 7th line down 你 can't miss it.
It says Gender, 你 can click on it and choose Male 或者 Female.
If 你 already figured it out, never mind. Maybe this will help someone else :-) take care!