From what i seen @Hourences did said they were modifying the report to select AI Generated on this announcement but it look like they didnt yet.
I suggest reporting it via their support page form on support.fab.com/s/?ProductOrigin=FabSupport , you could also ask for a refund for the product purchased.
The current report button am guessing only retrigger a scan system but only for mature content(text + images or metadata).