Lost all my boosters from iphone and ipad help

Please note that the boosters are saved to your device and not the game data, so you can use them when offline too. This does mean that any updates, crashes or device changes can cause these items to be lost. For this reason, we do not recommend storing too many of the won boosters as these can indeed be lost unlike Gold Bars.

@Yoyprivi, I do not believe that it's a "Stupid move" on the side of King.  Mobile devices are not the same as playing the game on a computer with browsers.  As mentioned above they are saved just to that device.  I don't think that King did this on purpose.  I believe it would have something to do with Apple and Android's development with their devices.  I'm not 100% sure that this is true, but I think it really has more to do with the devices and not the game developer.