Deleting, Editing, Creating Port Forward Trouble

@XfinityGina​ Not sure how triggering would help me. I cannot delete the forwarded ports to add a port triggering. I've unplugged the router for the time allotted and even reset the device to factory settings. Furthermore, I'm just trying to trouble shoot a device acting up that has ports forwarded. When troubleshooting the device, I removed it from my network and use a hotspot on my phone. When using the hotspot, everything resumed normal activity, so I'm thinking the router would be acting up with some setting. I just have no idea what it could be, attached is some photos of the error messages.

When trying to add a Port Trigger:

When trying to delete a Port Forward:

When trying to manage Port Forwading through the router's panel:

Let's go ahead and take a deeper look into the account and equipment. Please send us a direct message with your full name, business name, full address, and phone number. By clicking the "message" icon in the upper right page of our forum page. Once you click on that, input our shared handle (Comcast Business) to send us a private message.


• Click "Sign In" if necessary

• Click the "Direct Message" icon in the top right corner

• Click the "New message" (pencil and paper) icon

• The "To:" line prompts you to "Type the name of a person". Instead, type "Comcast Business" there

• - As you are typing a drop-down list appears. Select "Comcast Business" from that list

• - An "Comcast Business" graphic replaces the "To:" line

• Type your message in the text area near the bottom of the window

• Press Enter to send it

I would start a private message, but I am not a Comcast Business subscriber.
My hardware is the Tehnicolor CGM4331COM. The device I am troubleshooting is an Xbox One S. I am still unaware of what's keeping the device from connecting to Xbox Live servers.
I hate to put it in a DMZ.
I still cannot manage the port forwards on the xfinity app.
Who should this be directed towards specifically?

It looks like we sent over the instructions for our Business Forum, sorry about that! Can you please send us a direct message using these steps: 

Click "Sign In" if necessary
• Click the "Peer to peer chat" icon (top right corner)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it