Tried a few plugins to show my FB group on my site. None really fit the job, messing around developing apps, tokens and so on. Found 'Feed Them Social' and gave it a try. All I can say is....WOW. Did exactly what I wanted in about 1 minute, straight 'out of the box'.
Had a little issue after I updated, but the support was fantastic. Problem was solved in a very short time and everything was back up and running again.
If you want a plugin to display your FB groups/pages twitter etc. Don't try anything else, you don't need to, this does the job beautifully. Support is also second to none in my experience.