Was my sons fav game—now broken!!

My 4-year-old son adores this game. He plays it daily on his "iPod," (my old iPhone 4 with the SIM card removed) and is truly skilled at getting top rankings on every level.
The update to 2.0 broke his favorite game, because the "bug fixes" apparently included a forced change to the aspect ratio to exclude older/smaller screened iPhones. It works fine on my iPhone 5s but on his iPhone 4 the display is all squashed and the touch controls are mapped wrong.
I paid to unlock this game for his iPhone—and now it doesnt work! What a rip-off.

VeeIsMe about Blobster