Solution:
It’s better to ask such questions on BuddyPress support forums.
In general, I think, that the issue is not in the plugin, but in the used theme instead. Please try to switch to 2017/2016/2015 theme for a moment, activate BuddyPress on that default 100% supported theme, and then feel free to switch back to NRGNetwork. During the plugin activation it does a bunch of initial things, including DB setup, and it seems it conflicts with what is done in a theme.