Calculated fields option has disappeared?

In the past, I've used simple calculated fields in forms that I've filled out. I can pull up old documents/form templates and see the calculated fields. I can also add a new text box field in these document templates and have the drop-down of "Calculated Value"

However, in any new form that I create, even if the calculated fields are working perfectly in Acrobat DC, they all revert to regular text fields when I move into Adobe Sign and I can't figure out a way to get them back. When I try to add a new text box, there is no option for a calculated field.

What am I missing?

Thanks!

Message was edited by: Erin Gardner