thanks alot for not putting an idiot proofed tutorial on it, that explains every new item in lenght.
Very well designed, as the new items come in short mini level, without the existing one, where you see what they do, and then are combined with the rest after.
you can fix the offline bug yourself:
export EVERYTIME before you close the game.
If you come back, and you do not receive your offline progress:
=> import
works for me all the time
That would be a bug, I will look into it.