I am trying to add a new card to a form, so I go to Edit Fields, but then the "Add field" is greyed out co I cannot add the card that way. So instead click the 3 dots to the right of "Add Field" and clicked on "Add a Custom Card". This creates a card but then the "Default" property is not there, which I need.
How do I get the "Add field" to be not greyed out? Or is there something else I am missing?