I'm trying the Unity social starter example in Gear VR.. Following the README contained in the Unity project and uploading a build onto the Alpha channel, all works fine (blue floor, white sphere and my personal avatar correctly displayed).
My issue is when I'm trying to invite a friend into the social experience, the friends list is empty with the message "share your vr experiences. Add friends from the oculus app".
Note: I see the status (online home(gear)) of my friend in the oculus home tab.
His account is added to the alpha channel users.
This issue happens 99% of the time (once I was able to invite him).
I'm using Unity 5.5.4f1.