Thanks for your reply. My ID number is 11110716566 (Win 10/PC). I received 180/600 stickers for the BGT on week 4, but I didn't have the character prior to the event. In addition, I didn't receive Dachs or any stickers on week 3 - I didn't have this character before the event as I'm only in the 360s levels. I completed…
Same thing happened to me a couple of days ago. I assumed this was because I've not yet reached the level the character starts to become available. But perhaps not?