I was chatting with a friend who was on my friend list and suddenly disappeared from my friend list and my friend status went offline, and I didn't get a message to add a friend.
My friend has never blocked me, and we are not receiving friend requests from each other. Need to check your friends list. Also asking friends list to restore friends.
My friend's nickname is OH7I.
Find Friends asks you to add a service to find by nickname, not by code.