Why am I see a "Please connect to the internet to continue" error? Why can't I play offline?

Players who are using the free version of the game can play the entire game from start to finish, but there are some limitations compared to the paid version on the game. Specifically, the free version of the game will display adverts, and only supports online play - you will not be able to play the game while offline, which is why this error is appearing.

Please make sure your device is connected to the internet to continue. If you do wish to play offline, we recommend that you purchase the unlocked version.