Welcome to the Xfinity Forums and thanks for posting to make us aware of the issues you're having when trying to make your bill. What is the make and model of your device? There was a recent update to the app. If you haven't already, can you please:
Uninstall the current version of the app and rest your phone,
Once the phone comes back up, please reinstall the latest version of the app.
Once installed, please try to make the payment again and let me know if you have the same problem. If you do have the same problem, I'll need to begin troubleshooting.
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