Hey there!
I've been playing your game for some time now, and it's awesome! However, I have a slight problem, since after saving in the Alpha Kindergarten my save is sort of corrupted now...
The thing is: I am missing two of the keystones, the red and the yellow one. I had them inserted into the doorframe in the Far Station and they're gone now. I managed to go into one room, but it's empty since I've been there already. Also, the bats I encountered so far now have following stats: [Level 17 | HP: 34 | Attack: 25 | Defense: 11]. The Keystones are nowhere to be found, I only have blue and green in my inventory. I checked both doors. I believe it's not saved if there are key gems in the door slots, but I don't know why the enemy stats changed, too. This happened after I reloaded my save after losing my first battle against Amethyst.
I hope this helps with identifying the problem.
Have a nice day! :D