Yeah, I didn't have time to fix all of the bugs. I think I also encountered the bug where everyone stops fighting, but it only happened once, so I kind of ignored it.
The number of coins displayed on the screen isn't a bug. When a knight collects a coin, another coin automatically respawns. The numbers just show how many other coins the knights have
I also got a lot of advice on the game being easy. It took like an hour to adjust the numbers so that the game isn't too hard. Definitely should've nerfed the money upgrades.
Overall, thanks for the feedback! And what a coincidence about our games' tiles!