the previous main domain sardinka.kz - you installed wordpress. Now when you open the link http://fishkz.com/wp-admin the browser is redirected to http://sardinka.kz/wp-admin/upgrade.php?_wp_http_referer=%2Fwp-admin%2F and the message: \"Web page недоступнаERR_NAME_NOT_RESOLVED\"how can I fix it?
Answer:
You need in the database to completely replace all the links with upominanie old domain to the new one. You can do this in phpmyadmin
