Service activation

Is the indicator light lit steadily on the "Xfinity router" or is it blinking ?

That means that the modem is not connected to the live Comcast feed. If the system can't see the modem online, it can't be activated for service. What typically happens is that when a tenant moves out, Comcast comes out for a service disconnect of the other end of the coax cable line from the live feed from the street / tap on the pole or pedestal in between move-outs and move-ins. You'll likely need to book a tech visit to come out and reconnect the premises to the feed. If it's an apartment building / multiple dwelling, It's also possible that a maintenance person from the building may be able to do it. Good luck !

@user_zxnhes Hi there! Congratulations on your move! I'm sorry to hear about the existing services not working and being unable to access the option to activate the modem. @EG is on a good path with checking the lights on the modem to see if there is a good RF signal reaching the modem. It's possible that a signal issue will cause trouble and may even prevent activation from processing. 

I would love to help out and take a closer look to help complete the activation for us. Please send us a direct message with your name and service address. 

To send a direct message, please click on the chat icon in the top-right corner of the screen, and select "Xfinity Support" to initiate a live chat. 
Click "Sign In" if necessary
Click the "direct messaging" icon or https://comca.st/3J0ir1l
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