Try and launch Disney Plus from your current box. That is what triggered an upgrade path for my husband and one point. You can also go to an Xfinity Store near you and get one quicker. But be sure to bring back the other one before that trip so they can scan it back in. You can also request one from the community mods here when they respond to your post. Be sure to follow the instructions to message them when you post as its unique to you and helps keep everyone safe on here. Good Luck! 

There are two 4K boxes.   The wired XG1v4 DVR svs the Wi-Fi Xi6.  You can try getting one at a store, or asking here when invited to send them a DM, or calling support. 

Hello, and welcome to the Xfinity Forums. Our team can help! user_mfh14. If you could please send a direct chat message with your full name and complete service address to “Xfinity Support”, I'd be happy to look into this with you. To do so, click on the chat icon located at the top right of this forum's page.

Here are the detailed steps to direct message us:

• Click "Sign In" if necessary

• Click the "Direct Message” 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