MyBB Community Forums

Hi, for several days I have been struggling with the problem of logging in to my forum. When the information about the correct login is displayed, nothing happens.

Forum: https://anyforum.pl (nginx)

Cookies settings:

$settings['cookiedomain'] = ".anyforum.pl";
$settings['cookiepath'] = "/";
$settings['cookieprefix'] = ".";
$settings['cookiesecureflag'] = "1"

Changing the prefix of cookies helps only for a moment.