Cant download latest minecraft version

We bought minecraft on Google Play but when we tried to download it it didnt work. We havent got an email from Minecraft but a reciept from Google Play that we have bought Minecraft and the money have been withdrawn.. When we tried to open minecraft we got "You dont seem to have a license for Minecraft. Make sure that you have downloaded and installed Minecraft from the store." What should we do?
Regards Susann