Hey hey! Sorry my reply is so slow >.< I've just been completely overwhelmed with stuff in my personal life lately so I haven't really been on my PC much >.<
I hope you managed to find solutions to your problems since it's been over 2 weeks now >.< Sorry I wasn't of any help! Feel free to let me know if you do still need a hand though and I'll try my best to help :3
There is indeed a way to save the game. It's the opposite symbol for the load symbol. There isn't any quicksave or quickload in this one though because I felt it would make the UI look too messy >.<
And you're absolutely right that I did forget to edit the walkthrough after fixing the bug where you couldn't get both CG 31 and 32! I'll have to go edit that, haha.
Did you manage to get CG 29 in the end? I can't remember off the top of my head how you get it so I'd have to go through the game to try and find out.
Hope you had fun with the game anyhow :3