Port Forwarding Issue

Thank you for taking the time to reach out about this. You may need to delete it and create a new one if its giving you that error. 

You can double check the steps here: 

1. Open the Xfinity app and sign in with your Xfinity ID and password.
2. Select WiFi.
3. Select View WiFi equipment.
4. Select Advanced Settings.
5. Select Port forwarding.
6. Select Add Port Forward button and Continue on the next screen.
7. Choose the device you want to set up.
   • Note: If you don't see it, the device might not be connected, may use IPv6, or have a static IP. Port forwarding only works for devices using IPv4 addresses and DHCP.
8. Pick a common app (like Xbox or PlayStation) or tap Manual Setup to enter port numbers and settings.
   
   • If you’re not sure what to enter, check the app or device instructions.
9. Select Next to finish setup.
10. Your device can now use the new port settings.
    
    • Note: If your device uses MAC randomization, port rules may break. You’ll need to delete and recreate the rule.

To edit or delete:

1. Open the Xfinity app and sign in.
2. Select WiFi, then View WiFi equipment.
3. Select Advanced Settings, then Port forwarding.
4. Select Edit next to the port forward you wish to edit or delete.
5. Select Delete this Port Forward at the bottom of the screen (if removing) or Apply Changes (after making edits).

Note: Port forwards without an associated device can’t be edited. You’ll need to delete it and create a new one by selecting Add Port Forward.

Please let me know if this helps or if you have already tried this and are still experiencing issues.