Problems with moonflower

Hi,

My game seems to be broken all of a sudden! I've been playing quite happily for weeks but last night, when I had started from the beginning again, when I reached the level where you get the moonflower, it won't let me select any other flower, either to buy or to upgrade. I'm completely stuck!

I've already uninstalled and reinstalled it but it made no difference.

Any tips? I love this game and will be very annoyed if I can't get it fixed!

Thanks