If your forminator form uses groups for the fields (for easier reading experience or so groups of info area easier to drag/drop in the forminator backend), wpdatatables does not play nice with it.
Only the entire GROUP shows and you cannot select individual fields. This also means that it is not sortable by the child fields inside the group.
Example of why this is necessary in the UI for a cleaner experience: https://www.dropbox.com/scl/fi/81tkh2vrn2t54rs06z099/Screenshot-2025-08-14-at-3.24.43-PM.png?rlkey=qg3k0k0atp8tggej4wqepm8ql&dl=0
From my original ticket: https://wordpress.org/support/topic/forminator-groups-confuses-this-plugin
I support this feature request. It is very similar to a feature request I made some time ago, see :
enhance Forminator’s repeating fields in Data Tools #257 (https://features.wpdatatables.com/257)