Facebook suspension after account compromise – no recourse?

Posting here on behalf of a friend who is the director of a community choir. For better or worse, the choir uses (not exclusively) Facebook to communicate internally, and Facebook and Instagram to promote shows.

A few weeks ago, her personal account, and the Facebook and Instagram accounts for the choir, were all suspended. Facebook provides a form[0] for appealing this - upon submission, the form throws up an error saying "Your form couldn't be sent. Log in to your Facebook account for more information about how to request a review." which is incredibly unhelpful.

From what we can tell, one account or other was compromised and some pornographic material was posted on the choir's Instagram. A cursory examination of all the accounts' history/logs would show this.

So this is a last-ditch effort to find any other avenue to pursue. It might sound trivial, but I can see this affecting her mental health - both from the impact it's had on the choir and the personal feeling of unease that can come from this kind of compromise. If you have any advice, please help!

[0] https://www.facebook.com/help/contact/269030579858086