Activating plugin broke my dashboard

Wanting to get the social media icons back that I used to have, I installed and activated the plugin yesterday. Now if I try to click on my dashboard, it says:

This page isn’t working

shortwinded.net redirected you too many times.
Try clearing your cookies.
ERR_TOO_MANY_REDIRECTS

I did clear the cookies, and I also tried on different browsers and computers and even mobile devices. If I try clicking on different options, like “widgets” or my stats, it sends me to an error 404 page on my blog. I’d really like to resume access to my site!