Could you kindly define "switch"? Because it has an array of meanings, such as:
1: Switching between device
2: Switching between platform/OS
3: Switching between 2 accounts and/or including guest account

1: If the device is different but the OS remained the same, you are able to get your progress back by logging in with your Facebook account. That is, if it has been linked to that very Facebook account in the first place.
2: Unfortunately, you cannot get your progress back if you switch platform/OS.
3: You can try to re-install the game to your device and/or empty your game's cache. However, this will mean that you will lose your progress on your guest account through either method.

Hope this helps!