What you write makes no sense at all. And such ultimatums are unreasonable and quite irrational.
You are clearly upset about something. But you did not tell what you are upset about, so how do you think anyone could even begin to help you?
Also, your English is hard to comprehend.
Technically, you cannot prevent children to download anything. They could simply lie about their age and click buttons.
Practically, Itch has a setting to hide adult content. Adult content is anything not deemed suitable for children or the workplace. It is a fuzzy definition. Nudity and Gore qualify for it. Probably other things.
If you upload a project there is a checkbox if it has sensitive content. You need to check it. If you repeatedly upload adult content and do not check that box, there can be trouble.
When I looked at your projects, they were marked as adult. You can check this by simply opening a link in a private window in your browser. Since you are not logged in, in that browser and have no cookies, you will see an adult content warning.
If you did not check that checkbox yourself, someone did report your projects to Itch. There is a report button on the bottom of each project. And one of the boxes there is, that it is miscategorized or offensive.
Adult projects only appear in search&browse if the user is logged into Itch and has in settings the option check on to see adult content.
I searched for your username. I saw two out of three project. This means your third project was currently deindexed.
If you read the message board, you will find that this happens to a lot of games. It has nothing to do with adult content. Everytime you update a project there is a chance it will get queued to get indexed. This can take several weeks, as Itch is a free service.
So if you want to self destruct, go ahead. But do not use your "ban" or response time in a community message board as an excuse - on a weekend no less. You were not banned! You are banning yourself right now. And this is a community message board. Not a technical support hotline. If you need help, write an email to support. Expect an answering time up to 4 weeks and no answer at all, if what you want to know is in the faq.
https://itch.io/docs/creators/quality-guidelines#adult-content-must-be-labeled
Oh, and there is no guarantee to get indexed or to stay on index. Itch can and will remove games from index for varioius reasons. This is not a ban. If they ban you, they do ban you and remove the content. But it is their house and they can chose not to display every shovelware and garbage or questionable content in their indexing system.
Since two out of your three games from your "saga" were indexed, this tells me, there was no "ban" and the deindexing of your game that was updated 1 hour before your insult rant was the usual deindexing of updated games.
Assuming this is what all this was about. You did not tell!