I have had similar problem a month ago and had someone from Apple Support by the phone... he took the control of my Mac and clicked and unclicked several boxes.. Sudenty it started worked as it does in my PC, thats why I trully believe this is a configuration issue on Apple Eqts... strange that DocUsign does know that... I assume it did not happened only to both of us!! By the way, tried Chrome and Firefox and issue is the same - so not the software, but Mac Config.... When I open my account it keeps spinning for 15min, than it opens... another clieck anywhere and another 15min... so impossible to use!.... thats my experience with DocUsign and Macs!