Oh, damn(
so, there is a mistake in crops prices, which kinda ruins A LOT. I mentioned it in description, but yes, that's real bad((
You have Coins upper left corner, and for choosing crops to plant you click on a crop "panel", where the buy button is. It should have highlight. You don't have to choose action, the grandpa knows what to do, just click a tile.
But yeah, it could've been more clear, I totally get it. Unfortunately I didn't actually make it in 4 days, but in 2 😅.
Thanks for giving it a try and for the feedback! Perhaps you could give it another chance? 😄