I signed a pdf and sent it to the other party, they signed and now my signature is invalid. Report shows Error 1002 "form may silently change".

I signed a pdf contract and sent it to the other party, they signed and now my signature is invalid showing error 1002 "form may silently change".

We signed with Docusign, our signature was not LTV-enabled.

They signed with Dotloop signature was LTV-Enabled.

Here is a screenshot of the signature panel from the form we sent:

http://i.imgur.com/KekOrgO.png

Here is a screenshot of the signature panel from the document we were returned:

http://i.imgur.com/ml1Vveo.png

Here is the Appearance Integrity Report, The Error Code 1008* appeared in the document we signed and sent, but Error 1002 is new and description is "Comment or form field may silently change"

http://http://i.imgur.com/95RTnSg.png

The problem is we didn't get the signed portion back until 05/03/2016 which at that date would have voided our contract. They are insisting the document was signed the date of 04/15/2016 and they dropped it off to my attorney on 04/26/2016. My attorney has no record of this.

Does this look strange to anyone else?

* I didn't create the document so I really have no idea why Error 1008 (hidden field) would show up in the report, I do know that it's consistent in both documents where 1002 is not.