fix problem with login:
find in folder "ControllerPublic" - file "Register.php"
In line 658
preg_match("#^http://steamcommunity.com/openid/id/([0-9]{17,25})#", $_GET['openid_claimed_id'], $matches);
change to https
preg_match("#^https://steamcommunity.com/openid/id/([0-9]{17,25})#"...