Have you talked to the Avada Dev/Support? I don’t have access to Avada, but there’s nothing that I can see in ACF that indicates there should be any problem. ACF adds field groups before the content on the WP hook edit_form_after_title
.If you can’t get any help from Avada then you might want to submit a support ticket, this forum is just users answering questions. http://support.advancedcustomfields.com/new-ticket/