is it possible to edit the Comments and Footnote after creating them? Like to change positions?
Sometimes, after creating a footnote, they do not show (they are activated). Why?
After creating a 3D Notation, you may edit the Text and the format (eg. text and background color) in 3D View Properties>3D Notations, but there is currently no way to move them. Editing the location of 3D Notations is on our list of future improvements.
Regarding visibility, check that Hide if Closer/Farther than are not enabled in 3D View Properties>3D Notatins>Behavior. Also, it ldoes appear like there is a bug where sometimes Notations do not show after creation. Try opening the Animation Editor and/or switching 4D Review>Play Mode. This made them appear for me. We will work on fixing this bug