I think, no one understands what exactly happened, because the informations given make no sense. So no one can answer if something similar has happened to them.
You can unfollow people that you are following. This is of course reversible by just clicking follow again. But you cannot remove or block people from following you. So you cannot "lose your followers". Also, you still have your followers. So it stands to reason that you do not actually talk about followers. Maybe something that translates to the same word?
You can switch the website interface to Italian in your account settings. Maybe that helps with the site.
Since you posted a link to a project, I am assuming you updated your project by deleting it and uploading it again under the same name. This will of course remove all your ratings and comments, because, well, even with the old name and url, it is a new project for all intents and purposes.
I saw this done often, sometimes even intentionally, so I made an appeal/complaint about the situation
https://itch.io/t/3693485/do-not-update-your-games-by-deleting-them-and-uploadin...
If the issue is something else entirely, please clarify, so people can discuss and share their experiences. English is not my native language either. It sometimes helps to use a translator and translate back what you wrote. If the translator can translate it into something meaningful, chances are, it is also understandable in the other language. (Just write translate in a search engine and a tool will appear)
Or is this something about the release date of your project? You link your project with text that makes me think the project contains the bug. The only interesting thing is that the release date is now and you made devlogs since a month ago. You sure the mistake is not reversible?
By the way, I suggest you add tags for Delphi or whatever. Some people might be interested in this type of game and might look for it with such info. (Sorry, but I do not know which tags are fitting. Have a look at other retro games maybe.). And if you can do this for this software, maybe change your project to be "portable". That means: no installation necessary. Unzip (or Unrar in your case) and run. This is the established standard for practically all indie games, so if you do not have good reasons to have an installer, think about doing away with it. People are not used to it anymore.