While I have played before, and do know the basics, the core strategy for the game is not one that works well in my brain. It takes me a bit to really get my brain to think in terms of how the game works, and the need to largely rely on reactions. On the default difficulty it is certainly still very hard, and likely too hard for players who are not fans of this style of game. For the target audience, it is probably fine. I think that adding the easier difficulty was a good choice and will help with jam players who aren't as good. That easier difficulty may need additional tweaking, but I wouldn't go too far on the hard difficulty. In the future you may want even want to have 3 difficulty levels with your ideal being the hardest, but starting at a midway point so the average player doesn't get too frustrated with the default, while those it is meant for can choose to step up.
I'm going to say that my issue with "Get Ready" was likely distance. They were a bit away and I missed the range limit on it. Adding a notification as to why it isn't usable, though, would be helpful.
There is a lot to learn to be good at the game. Each version is making it easier to learn and get into the game. Finding the right balance of informing players, but not overwhelming them can be tough, but it feels like things are heading in the right direction.