App disappeared when I share

Says “go to email app and open the pdf or image of attachment and then hit share and then choose open in adobe sign and fill” but when I do that the option for adobe doesn’t even pop up and I’ve tried reinstalling the app This app that was successful with being able to sign documents after I sent them or shared them but then all of a sudden when I went to send or share the document the bubble for the app I’ve successfully used in the past doesn’t show up