Cause
This error occurs when you are using an old version of the app.
Steps to resolve issue
Please update your app from the Apple App Store, Google Play Store or Amazon Appstore.
If you continue to experience issues, please visit our discussion forum community from any internet-connected device. Chances are, your question has already been asked and answered. If not, post your question and get answers from Comcast employees and/or customers like you.
You can also contact us using the method that is most convenient for you.
Additional information
Visit our Online Support Center to find common solutions.

The easiest way to activate, manage, and troubleshoot your Xfinity experience is with the Xfinity app! Get 24/7 real-time support, pay your bill, view plan details, get outage updates, and more. Download the free Xfinity app, or scan the QR code with your smartphone.
Need additional support? Ask Xfinity Assistant.