red flag page by google is not never a file problem (expt if your send torrent or illegal file) is content problem so if you have red flag on your site is because you site show a illegal content that all ! so stop using useless scan only google can say you why he block and read the google error message correctly, you have show content who collect user information (passwords) over HTTP so is normal google block you is illegal ! since this year with GPRD protection and note for yourself this red flag is only for you country ^^