Hi Stafford,
Thanks for your interest in our plugins. You will not be able to import events from any page or group that Facebook has deemed to be adult in nature. Unfortunately, that distinction is entirely their prerogative and seems somewhat inconsistent- sometimes pages are marked as adult and sometimes not.
If the page you are importing from is for the band itself, I doubt it would be restricted. This most often happens when people are trying to import events from a strip club or bars page directly. If you’d like, I could test out an import from your Facebook page(s)- I’ll just need a link.
Best,
Leah