In-game items like lives, coins, and boosters are stored locally on your device. It's not possible to transfer these items between devices, as doing so has caused game stability issues.
To ensure your items appear on a specific device, you must collect or purchase them on that device. For instance, if you accept lives from a friend on your tablet, they'll only be available on your tablet.
If you are moving your game to a new device, please contact our Support team for assistance.