How do I sign out of the Xfinity Stream app remotely?

How do I sign out of the Xfinity Stream app remotely? I signed into my Xfinity Stream account on an iPad that I no longer have access to. From my account on my computer, I can see the iPad still streaming (because I never logged out of my account on it), but I can not sign it out. The primary user also suspended my account to see if that would log out the iPad, but it did not.

The primary user deleted the restricted account the iPad was logged on with but the device still streams, even after closing the app and opening it again.

Thanks,

Scott