can somebody explain starfall to me?

before the update I used to play on my little iPad and I would ALWAYS get like 550+ (a great score back then) but tbh I didnt do anything special I truly believe it was just like iPad mini friendly and pay to win kinda the update came out and I was so excited but every time I play on my iPad I get like 500 and I get like 700 on my computer IDGI it just sucks because it was the only comp I was good at and now its just yet another benopolis nuke comp, im just done.