2. Configure $main_url as 'softurl' in setup_options.php while manual installation. Dont use the hardcoded default one i.e $main_url=(isset($_SERVER['HTTPS'])?'https':'http').'://'.$_SERVER['SERVER_ADDR'].pathinfo($_SERVER['SCRIPT_NAME'])['dirname']; as this would install the script in format of URL : http://IP-ADDRESS/{{MINIBB}} and not domain name. This is also mentioned in their docs that, this should be set to a static value, {{PATH}}/templates/manual_eng.html(under $main_url).
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
