I can't seem to change any of the settings in the Advanced Attachment settings (I want to enable users to delete their attachments in Media Library) but its just not that setting in particular but all settings on the page.
I'm logged in as Sys Admin and I can change other settings on forums no problem, just not in Advanced Attachment page (when I hit Save Options button nothing happens there's no interaction with the webserver)
When I check the browser console there's multiple invalid form control errors:
An invalid form control with name='wpforo_attach_options[groups][maximum_file_size]' is not focusable.
The same error happens on both my localhost dev install and an integration test site.