1. The price is too high. I'm sorry, I know this sounds cheap at $5. But you're competing with the entire world of iOS games. For free, I can get endless kinds of games like this, but with in game purchases. Some of those, like Cardinal Quest 2, are actually amazing and the ingame purchases don't get in the way at all.
I think if you priced it at $2 you might get more revenue in the long run.
2. I don't know what the hell a Yerba Mate is. It does say in the description that it's some kind of coffee, but I honestly had to force myself to buy this. I'd rather buy a coffee than a game about coffee.
I feel guilty saying these things, because I don't know if my feelings here are representative or not. Maybe a lot of people feel that $5 is the right price point and that a game about coffee management is compelling. Either way, I want to support gamedevs, so I might try playing this just for kicks.