wiped out my sidebars

This plugin is dangerous in my opinion. I installed it and no other widget areas appear on the front end, and after uninstalling it and removing the code they are still gone. Looking at the code for where they should be there is nothing there. I’m glad this was just a test site and not a live project. I will have to ftp all wp files back up to see if that fixes this.

https://www.ads-software.com/extend/plugins/custom-widget-area/