I stopped using external cheat modes years ago.Not everyone has had your negative experience. I don't consider myself to be a particularly gifted person, but getting through this game wasn't particularly difficult for me personally (yes, it takes time and persistence, nothing more). You just have to play. The renewal of the Artic Cafe and dating with Ruby always worked, I went through this game three times from scratch. What is your problem? I guess the most obvious answer is that some triggers during gameplay didn't work. You didn't use a cheat mod? Changing some variables can cause a similar result, it's better to use only built-in cheats.
Surely not everyone had had blocking bugs, but I'm not the only one. Just take a look at the other (frequent) post of people unable to trigger something.
(The hint log is unmistakable buggy.)
Of all the many AVN I've played, this is the most buggy in absolute.