I’ve installed the plugin on a client’s website and cannot enter text in the Message box in the Page Settings area of the Content tab in either the visual or text editor mode options; the box is uneditable. I’ve had the same result in both Chrome and Firefox. Any ideas what might be wrong?
Found it! It was a proprietary plugin for the theme currently installed- For your future reference, the culprit was ThemeMakers Visual Content Composer plugin.