Echosign is automatically setting a password on a signed document

I select "no password" and send the document for signature. When it comes back it is password protected. I need to combine it with another document in order to submit the entire package to my client and it is requiring a password to open. During the signature process it didn't advise any of the individuals signing it that it was assigning a password, nor did it alert me. How do I stop it from doing this?