Make sure those buttons you add are not cleared out
they are in BP_BasePawn
so if you add your buttons dynamically - make sure it happens after the clear, re-add them after the clear or remove clearing all together for this particular button you add
If you do not need to have them exactly in Activate_VB WrapBox you might want to add the button to the VerticalBox it resides in (red arrow)
This way you won’t have to modify the script dealing with clearing that happens