Website completely messed up! Please help!

I don’t know what’s going on with my site. I added information to a plugin WP-Table Reloaded and saved it and now my site is completely funky! https://support.cfsystemsonline.com. Even the Dashboard and edit pages are completely funky, without any formatting basically. I figured out how to make that plugin inactive but it’s still messed up (found out that plugin is no longer being supported and they’re replacing it with another plugin). Please any help you can suggest would be awesome! Thank you!