@webg your child theme needs to implement a comments.php file for this plugin to work … thus if you carefully read your error its saying that wp-content/themes/corpo-child/comments.php is missing …
you should be able to copy it from your parent theme or wait for the next version and I’ll add a few more checks in place to look if its running a child theme that has not implemented the comments them-self
Cheers!
and @foxrain90 no the facebook not having an optino in the plugin to add the app is most certainly is not “the same problem” so next time i’d much appreciate it if we could try to keep separate problems or bugs etc in their own thread ….
with that said, the facebook id is optional and would not cause the fb comments to not show up, however I have added a new place in the admin to add your fb app id and g+ id etc etc etc optionally so that should address it in either case ( i’m not perfect hehe ) and also add some new optinos and such for all of them + as always cleanups and a bit more too * still a surprise coming too *