I have two sites running wpforo Advanced Attachments.
On Site A when a public browser (guest not logged in) views the Forum they see previews of attachments and they link to the full screen view of the file.
On Site B they do not see a preview of attachments and when clicking the attachment icon a message pops up in the top right corner stating "Please login or register".
The only big difference between the sites is that Site B uses wpForo User Custom Fields.
Any suggestions appreciated.