WordPress Speed Up Service | WordPress Website Maintenance Packages Reply To: My “Themes” page, and “Add Theme” is not working, by Steve Stern This may be a plugin or theme conflict. Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles. Reply To: My “Themes” page, and “Add Theme” is not working