To restore WordPress to the default version download a clean install from wordpress. org extract the archive and then copy and replace everything via FTP except the wp-content directory. Go to the plugins directory which is wp-content plugins and delete the whole directory of the plugin you fiddled with. Connect to your hosting account via FTP if you're not quite sure how to do that contact support and ask for instructions they'll help you out you can use FileZilla as your FTP tool free.. If they have such thing either ask them to restore the database from that backup or get the SQL file from them and restore it via phpMyAdmin by hand... Before we go to the topic of how to restore a WordPress site after a crash a little journey into the past.
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