Please do the following to transfer your game progress to a device with a different OS:
Please note that synchronization is possible via Facebook only.
Please make sure that you are logged in the app itself on your device.
Please open the app and tap on My account (=envelope icon in the upper bar).
If you are logged in the app, on the Login page you will see your Facebook name you used for registration in the app.
If you are not logged, you will see the word ""Login"".
After it use the same Facebook for logging in the app on your new device.
To restore packs on your new device: tap on the Puzzle Shop -> My Purchases -> tap Restore on each pack
Unfortunately purchases like Gold deal or All inclusive can't be transferred to a device with a different OS, only to the same one.
Please also note that some packs were created only for one platform and they can't be restored on a different one.
Started, completed and created puzzles can't be transferred to a different device.