I really like the concept, and the art was definitely very cute! Plus, I had a lot of fun trying to solve the puzzles, it was a good experience!
As you've heard from other reviews, the difficulty is too high at the start, the first level is a big pain, and it'll be a hurdle for new players. It might be easier than other levels, but if someone isn't familiar with the game or mechanics at all, you really want them to start off suuuuper easy, so that they can get a feel for the game, and get invested in playing it through to the end. You could probably only start with the beans necessary to progress, and in the correct order, that way it's really intuitive to beat the starting stages, and then you can add changing order and such in later stages.
Additionally it would be really nice if the beans moved a little faster, just so that it'd be easier to try different strategies.
One other thing, rather than instantly dying when the limit is reached, you should probably just only let beans turn into plants if the limit hasn't been reached. For example, in the first stage, the limit is 4. When the 4th changes, you instantly die. I think it'd be nicer on the player if the limit was listed at 3, and once the third has changed into a plant, you just don't have that option anymore. There was one time where I misclicked the plant button when I meant to switch beans, and it killed me, so just making that a little friendlier would be great.
But overall, I really like the concept. A fun idea for a puzzle platformer! Nice work!