I am going to be brutally honest with you. Please don't take offense, as I assure you it is not my intention to insult or brow-beat you. I just hope you really take a minute to think about what I am going to tell you, because it will help you drastically for relatively little effort. I am going to use a few analogies, and if you know what that word means then you absolutely need to do an update on the script. Remember, it is not a rewrite. You have the foundation laid. You just need to replace the translations with things that make sense and from what I have read from your few post you are more than capable of drastically increasing the quality of your work all by yourself.
I normally would not spend so much time on this but for some reason the flaws in your early writings in the game have irked me quite a bit considering how simply you could fix it yourself with relatively little effort. How long would it take? 10 hours, if that? For that much of an increase in quality. I wouldn't hesitate for a minute.
I am not going to get into the specific details but I am a project leader. My field is not something like this but I specialize in custom projects. In that time, over the years, I have dealt with a vastly varying range of clients whom all want different things. I am very successful at what I do because I know how to deliver what the client wants while also knowing what they don't know and what they have no business making decisions in.
Imagine for a moment you were a baker. Someone comes into your little shop and told you they wanted a 7 tier wedding cake. They showed you pictures, colors, told you what flavors they wanted, told you what designs they wanted on the cake, what they wanted on top etc. Would you let them tell you how to make the cake?
No, of course not. What the fuck do they know about making a cake? Nothing, that is why they came to you. Your job, is to make the cake they want. Something that makes them happy but also something that looks so good that when others see it they want a cake too. That's how your shop stays open, that's how it grows. How that is created and structured is your job and they should have little to no say in how that is done.
I am only in chapter 3 but right now you are like a flower shop that that can make nice flower arrangements but the flowers in your window the customers see when they walk by look like shit because they were the first flower arrangements you made and you never replaced them with the much nicer stuff you have learned since you started. How many of those new customers when seeing those old flowers in the widow do you think come in to your shop, vs the amount who left once they saw the old flowers not knowing there are much better things inside? I would bet you it is quite a few.
Once again, I am only talking about the grammatical part of the game. Anything else can wait until later but you seriously need to change the flowers in the window.
Also I will bet you that your previous customers (supporters), will certainly enjoy the new flowers in the window even if they said they didn't care when you asked them. People don't always know what they will like.
I don't want to sound like a broken record so here is the last one.
What you are doing is like repeatedly spending time and money putting out a bad advertisement, with a ton of errors in it, to advertise something that is much better than what the ad makes it seem to be. If you saw a business put out an ad like that repeatedly what would you think? Wouldn't you wonder why they don't spend the little time required to update the advertisement instead of putting out the error riddled first ad they made years ago?
You are postponing a "quick" fix that will help you drastically now, with future and believe me, current supporters as well, until the game is completed, yet by that time it will certainly not have 5% of the impact it would have now.
Current clients, in your case supporters are very important. Please don't think I am saying they are not. However you can not let them decide on your growth. If you have 100 clients, even if they are all great, most are going to tell you, if you ask them, to just focus all your time on taking care of them. Why wouldn't they? They are not really interested in you spending time on getting 100 more. The question is, are you interested?
As I said, please don't take this the wrong way, I am quite blunt and I find it best to be direct when conveying something.
As you are not a native speaker, if you don't fully understand anything I have said please feel free to contact me. Although I would bet you understood me just fine. Do the script update. It will be good for you, I confidently believe that.
It is ultimately your decision. Good luck with your game and I hope you have success
), and finally a whole new world of this game opened up to me 
