Have you ever looked at your plugin list and wondered whether you actually using it anywhere? Or perhaps deactivated a plugin or swopped themes without realising that you now have a dead shortcode on a page or post somewhere telling the world that you really aren’t on top of things in your websites.
A overview and brief history of the 'shortcode any widget' plugin
I’ve had to explain this many times, so now I just link here. Instead of messing around randomly trying different things, hitting more buttons, approach your problem systematically.