We are sorry for the trouble. As described you are getting the pop up message evry time you try to read the PDF file.
Would you mind sharing the exact workflow/steps you are doing that leads you to the pop up message? Also, please share the screenshot of the pop up message for a better undertsnding.
You may try the following preference setting and see if that works for you. Go to Adobe Acrobat DC (Mac), Edit (Windows) > Preferences > General > Uncheck 'Show me messages when i launch Adobe Acrobat'
Also, what is the version of the Adobe Acrobat DC you are using? To check the version go to Help > About Adobe Acrobat DC and make sure you have the latest version 20.009.20074 installed. Go to Help > Check for Updates.
I just opened Adobe Acrobat Pro to edit a document and was greeted with a popup box about using e-signatures (see attachment). The "X" to close the box is grayed out, and hitting "Try Now" goes nowhere. I also can't close Acrobat (have to use Force Quit).
Suggestions to get around this and get Acrobat working normally? I'm on a Macbook Air running Catalina v. 10.15.5, if that helps. My version of Acrobat is 20.009.20074.