For all my time on this site, I've played a lot of games. And when I experienced games from Russian developers, I realized the following things:
1) Russian developers are not bad coders. Their games often contain a lot of complicated code and the developers themselves often write games in the sandbox genre.
2) Horrible paywall. The game just came out and there is no content? But you enter the patreon code for a couple of secret scenes! Protection against piracy? This is also a frequent prerogative of Russian developers. And okay, if the game was good, but here comes the third point.
3) Games are often not interesting. I've seen few games from Russian developers, where the game was interesting. The story, the dialogue, it all affects my interest and I don't get that there. In this game it's all on a primitive level.
Not only that this game without a patreon code it won't work for you, but it also checks that you don't share your codes and don't play at the same time. And it also periodically checks the connection to the Internet.
So after a little bit of work, I'm posting here the crack.
Cracking this game was more fun than playing it.
Put the file persistent.py in the folder School-game\renpy