Fun but too easy even at the difficult setting

I was looking for an alternative to diner dash, and this is definitely more fun. However, it is way too easy even on the difficult setting. I can get expert without even buying anything from the store. The only challenging parts of the entire franchise that Ive encountered so far were the invitation challenges for the "Emilys wonder wedding." Can the developers make the game more difficult please?? I did pay $10 for it and three others but I dont want to spend the money if it wont even take any effort to beat the game. :/

Cmt7345 about Delicious - Wonder Wedding, v3.1.2