Need port 8883 opened for MyQ to work on my garage door

No other IOT device in my household uses that port. I used my wife's phone as a wifi hotspot and was able to connect and open the garage door with the app, so it is not the app. Until 2021 you could use the Xfinity app to open MyQ enabled garage doors, so you had to have the port open. It was working perfectly till the other day. If you are unwilling or unable to open that port, which I need so I can get Amazon key delivery, then I will cancel my Xfinity Wifi and  change to Sonic as my ISP. They have fiber running to my neighorhood and they allow you to open a port yourself. I think while I am at it I will test YouTube TV and see how that is, maybe I can can cancel my whole Triple Play and save some money. Your move.

msnordberg The last thing we would want is to lose you as a customer, however I can understand if your first instinct is to look into a change after having an issue with one of your connected devices. In order to assist you we would first need to gather some information from you, such as who we are speaking with today and your service address. Please provide this in a direct message for us, we will await your message to continue.

Here's the detailed steps to direct message us:
• Click "Sign In" if necessary
• Click the "Direct Messaging" icon (upper right corner of this page)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
• Type your message in the text area near the bottom of the window
• Press Enter to send your message.