Is it possible to Change Labels of Flexible Content Field buttons e.g Add Layout, Delete Layout and any reference of Layout, i want to change it from Layout to another name, thank you.
The only thing that can be changed is “Add Row” to something else. This is under the “Presentation” settings. Nothing else can be changed.
You would need to contact the developers for adding this, I suggest using this https://www.advancedcustomfields.com/feedback/