Itch doesn't block games based on IP, nor does it even have a region blocking system, so thinking that Itch shows the message to everyone except your IP doesn't make any sense.

What does Itch gain by hiding the message from your IP?

Please try to be objective and calm before continuing with the thread, so that it is not a problem for others to try to assist you.

Try DOWNLOADING (not just reaching the link, but actually DOWNLOADING) your game with a browser in incognito mode or without being logged into your account.

Itch is not Steam, it hosts more than a million games for free for the vast majority, which means that it does not have enough staff to resolve all the questions and reviews that people need at the times they would like, so which you must be patient and wait.

If for some reason, you need to rush your case to support, in this same forum, at the top (where it says "View this community's rules..."), there are some rules (the ones that "No Time To play" told you to review) that inform you of the steps to follow.

When I check with a non-logged in browser, no warning. So apparently there is an IP-based filter

You ip does not change by using a non-logged in browser. But if you are logged in, why should the system quarantine the stuff you uploaded yourself from you.

Support will not answer within hours, most of the time. They typically do not answer at all.

When the mod, who is not itch staff, talks about categories, the message board categories of this very community are meant. The subsections have a rule section what to post and what not and how to post certain things.

There is nothing you can do but wait, while itch staff investigates whatever caused the flagging of your page. If it were infringement, it probably would not be quarantine, but file suspension or mere deindexing, while it were investigated.

You might know or not know, but there are many accounts hacked each week. Very likely hacked by downloading things from itch. It was evident from those hacked accounts posting more malware each day. There is this psa thread about try my game on discord scams explaining part of the problems. Anyways, itch does fight those scammers, but it is hard, since it is free to upload things on itch. So their automated systems either have some false positives or the number of visible malware increases a lot.

So a likely scenario might be, that your game executeables triggered a false positive on a malware scanner. There are game engines that notoriously give false positives now and then. Including godot and renpy and I believe gamemaker and likely many others. Especially exe packing is very bad in that regard. I see your windows file is an exe and not an archieve. I am too lazy to try it, but I would bet that this exe triggers several scanners. Godot packed exes are utter garbage in my opinion, because they trigger scanners so very often.

I looked everywhere, where and what are those rules?

...At the top of the category when you look at it, and at the top of your post when you click New Topic. You can't even reach the textbox without scrolling past the screenful of rules. Please read them. You had to tick a checkbox saying you did before you could click Post.

And my page is similar to all others, what could I possibly infringe?

Like I said, you triggered an automated check. The idea is that staff will look at the page ASAP, but sometimes it takes time. And the exact criteria are secret so that people with bad intentions don't try to evade the checks.

I did, this morning, 5 or 6 hours ago, I got an automatic [Request received] answer. And that’s it.

Yes, that's how it works. Next time please wait for at least 24 hours.