worlds i buy from the minecraft store not loading blocks

everytime i try and load a gametype from the  minecraft store (sky block, one block etc)  i will spawn in the world with no blocks under me. falling into the void over and over. ive tried uninstalling minecraft, clearing my storage space (which is bearly anything) uninstalling the game type and reinstalling. nothing seems to fix this. 

ive attached one of the worlds to view suffering from this bug if this helps