Excellent – Usage: For Development testing ONLY

I see a lot of 1 star reviews from people who obviously do not understand what this plugin is for. It is ONLY for Development testing and should ONLY be installed on a Development site/server. This plugin should ONLY be used by Coders and Developers (plugin authors, theme authors, custom coders) to test their code against the latest non-Publicly released WordPress versions. If you install this plugin on a Development site then there would be no reason to change to a publicly released Production version of WordPress since this plugin is ONLY for Development sites/servers and NOTHING else.

If you want to install and use this plugin then create a Development WordPress website (a copy of your Live Production website). If you accidentally installed this plugin on a Live Production website then restore your website from a backup.