Signed and all signatures are valid, but with unsigned changes after the last signature

Using Adobe Acrobat Pro DC and initially had problems that elicited this message:

"At least one signature has problems. Please fill out the following form."

This message was eliminated by doing the following:

1. 1. Click on “Signature Panel Button”
   (upper right) and the signature panel opens to the left
   
   2. Right click on "Rev.1: Signed by DocuSign, Inc."
   
   3. Click on “Show Signature Properties”
   
   4. Click “Show Certificate button” (under the summary tab) - the Certificate
   Viewer opens
   
   5. Click “Trust” tab.
   
   6. Click “Add to Trusted Identities”
   
   7. Adobe Security window opens, click "OK"
   
   8. Click OK, and again until you exit from the all the dialogue boxes.
   
   Next time you open up a PDF, the DocuSign Signature should be valid (trusted).

Once the PDF form was closed and re-opened, the first message was gone but replaced by:

"Signed and all signatures are valid, but with unsigned changes after the last signature. Please fill

out the following form."

Now how do I get rid of this second, unwanted message?

Thank you.