port forwarding disappears everyday

It was disabled and it was happening. I spent 1.5 hours online with an agent on chat and they had me re-enable it. They had me re add my ports like I do every single day and assured me it would hold. They do not hold. I have only had the service for 1.5 weeks now and this has been a nightmare. 

Thanks for confirming user_teci9h! Are you using a separate router in bridge mode?

No, I am using the supplied gateway/router CGM4981COM

Set up port forwarding in the Xfinity app

1. Open the Xfinity app and sign in with your Primary, Manager, or Member 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.
   
   

my device has static ip and in the router it is marked as static as well. 

Thank you for your update and the opportunity to try to help out. I'm sorry that we were not able to correct it for us.