We have tested and found that the issue is with the newer version of Chrome blocking the 3rd party cookies. The work-around in getting it to work: user can go in Chrome Settings -> Privacy and Security -> Click Allow Cookies.
This is not 100%, for whatever reason, the version I use on my home computer, this was not successful. I had to switch to Firefox when using Bill Pay. For a number of Chrome users, however, this did work. Please let me know if it works for you.