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Boosters are saved directly in your device's memory, which always allows you to use them while playing offline. This also means that if you delete the game or there has been an update in the game or device, then Boosters can be lost.
However, since you mentioned the profile picture has changes, you might be connected to a different account. Can I please have your User ID so I can locate your game records and a screenshot of the game map showing the profile picture so I can have a closer look?
Thanks
However, all the progress that is currently saved on Facebook/King account can easily be retrieved, once you have reconnected the device successfully).
Regrettably, you will lose any saved boosters and messages. I would recommend using these up before re-installing, if possible.
Let me know when this has been done so ì can get Support to add some Boosters to your game as a good will gesture 😉