Downloaded this plugin as I had used it previously on another site last year (site no longer running). It got rave reviews across a number of sites so I installed it.
Created my first contact form and saved, refreshed to see the changes and -- my entire site is messed up! Zero formatting, just plain html. Tried to clear cache, every little trick, read a bunch of forums before ended up removing plugin. Even without it the site remained strange so ended up reinstalling my theme (luckily a child-theme!). Won't be doing that again, ever.