You may receive a pack containing stickers you already own. These are called duplicates. To find your duplicate stickers, go to your Collections overview and tap on "Duplicates".
 
Duplicates Icon

Duplicate stickers are added to your duplicate collection. Once you have collected enough duplicate stickers, you can exchange them for a new pack which may help you complete one of your chapters or your entire album.

If you would like more information on this topic, you can contact our Customer Service by tapping on the Settings icon (with the 3 lines) at the top right of the screen, then on the “Help” button ". You can then open a conversation by tapping the bubble 💬 in the upper right corner.

Have fun and enjoy playing!