I am using Acrobat XI v11.0.19 on a MacBook Air running OS 10.11.6.
I am having trouble signing documents that are sent to me. Each time I click to add my signature, Acrobat opens the "Add Digital ID" window. I must then browse to find my digital ID file, enter my password, and sign the documents. It is about a 6 step process. As long as I keep Acrobat open I am able to one click to sign all the other files. If I close Acrobat, I must start the process all over again.
I have gone into Acrobat preferences and set up to never logout of my signature file yet each time I quit, I am logged out.
This only happens one files sent to me and never on files that originate from my computer. Those files I can always "one click" sign without logging in.