User connected to a known proxy??

I have used the STARZ app for a couple years now by logging in through Cox cable.  Today I got the message “The user is currently already connected to a known proxy” when I tried to log on.  What does that mean?  Is this a problem with the app or my account?  I changed my password in case someone else is using my account.  I still get the message within the app.  This is frustrating!  I just used the app three days ago.