One main issue...

I love the game, but sometimes you make the "hard" levels too hard that you cant get past them. Ive been known to completely walk away from a game if I have to spend sometimes 2 weeks to a month to get past a level. I have put a lot of money into playing this game and now I hear youre about to make it to where I cant play anymore because my iPad doesnt have the memory to upgrade to the higher iOS. Additionally, just a piece of advice, concerning the stars; super hard levels a player should earn 3 stars, hard levels, two stars, and then to one. It takes so much just to earn one stinking star. Oftentimes, a player needs 3 stars just to consider making improvements. The reward system is severely lacking...

Orca2dolphins about Gardenscapes, v2.3.0