I have the same problem. I'm 10 points short of being able to unlock the modern photo frame, and the game isn't giving me any more tasks. (I play on PC, so the issue isn't just with the console version of the game.)
Community ManagerHeya kanadiyya Is the photo frame the only reward you're not able to unlock, or are you seeing issues with the pajamas as well?
I literally cannot do any of the event due to not being able to do the tasks because of the not being able to buy the photo frame. So unfortunately I can't say whether I have any other issues with later items.
