When anyone visit my website the browser says to him that the website are dangerous, this made everyone when i share them my website’s link thinking i need to hack them.
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I see a phishing warning from Google Safe Browsing. This is something you’ll have to appeal with Google, as InfinityFree can’t do anything about it.
That said having the base of your domain lead to an account creation field with no context whatsoever, does seem pretty suspicious in my opinion. It might be worthwhile to redesign your homepage.