Hey there!
Thank you for reaching out and for bugs reports, I will try to deal with them as fast as possible! There is small problem with texts, shifting should be fixed on Sunday.
Auto buy, buys X amount of chosen info (x1). I'm correcting the perk so it won't show at 0, thank you, it was a bug!
You are the second person that would like to have it changed to have this perk 'refil' to certain point. I will be looking into that.
Auto feature is something I also was considering, I think I will add it, thanks!
Flexible save is little harder in Game Maker but I will check the possibilities.
Replay of entire scenes will be for sure available in the future, thank you!
Don't worry, you write better English than me, have a great weekend! I'm very glad you like the game!
Alex