Adobe EchoSign Hangs on "Sending Document"

I am using Adobe EchoSign in a corporation.   I using Chrome with the latest updates (Version 46.0.2490.86 ~ 64-bit) on the browser.  I have placed all my signature fields into the document successfully until i get to the "send" step.  The system successfully creates the <filename>.audit.pdf file but the system hangs on the message "sending document" and the squares (hour glass) displays and never sends the document.  This was working fine for me a few days ago. Please can you let me know the following:

1. Tell tale signs that something might not be set up correctly?
2. Anything on the browser I can check or troubleshoot?
3. Expected or known issues

Please let me know what I can do to help troubleshoot.  Thanking you in advance for any help.

Kind regards.