Will this plugin work for FB Groups?

I highly doubt it. But taking the last person’s message, when you go to the FB album, you’ll have a link like this:

https://www.facebook.com/media/set/?set=a.267672173322957.63528.267671203323054&type=1

That first number set is the album id, grab it out, and make a link like this with it:

https://graph.facebook.com/267672173322957

If it tells you error auth required, it’s a no. And, I’m 99% sure that’s what it will be.