I had used about 6 golden keys so I had a total of 69 left. Went to go do some quests and then had immense difficulty on sledge because I was under leveled and had low level crappy gear. Went back to the golden chest to get some decent loot and all my golden keys were gone! My friends Keys have also disappeared! Please help!
If you didnt made a backup of your profile save, its gone
You’ll need to file a support ticket regarding the keys. Your friend will need to do the same for their own account as well.