Plugin Caused Widget Screen to Stick

Hello,

I am new to this plugin. When I installed it, I was then unable to use my widgets screen at all (no drag and drop, or dropdown menus). I deactivated the plugin, and it went back to normal. Disappointing! Any kind of fix?

Thanks,

Nick

https://www.ads-software.com/plugins/simple-follow-me-social-buttons-widget/