Plugin developers are not the same thing as the “Bubble” development team. There could technically be 10000 different Facebook plugins available, just like there are tons of copycat apps on the iOS and Google app stores. It typically doesn’t make sense to use two of them. My advice is to pick the one that works for you and stick with it.
There are only 2 plugins for Facebook, one you need to login with the other is dependent upon the first. Or at least that’s the only way I was able to set it up