I attempted to install the gp-premium-1.9.1.zip file. the plugin insatllation failed. I have attempted to re-install the plugin several time. The latest error i am receiving states “Destination folder already exists. D:/customerdata/webspaces/webspace……” The plugin is not installed as I do not have the option to deactivate it or delete it as the plugin does not appear on my WordPress dashboard under Installed plugins. Please provide guidance.