Can’t get tv to work

Hello, @user_ek5isc thank you for taking time to create a post. You've contacted the right place for support, and want to ensure you're able to utilize the Flex equipment. I did want to let you know that Flex has now transitioned to Xumo, I'm not sure if you have looked over this document: https://www.xfinity.com/support/articles/xfinity-xumo-faqs

In regard to Starz, did you order that directly through the equipment? If not, you won't be able to access Starz if you are paying through a direct subscription with them: I currently subscribe to Cinemax, Starz, and/or MGM+ online. Can I continue watching on Xumo Stream Box using my existing credentials?
No. You'll need to cancel your existing subscription and purchase these services through Comcast to access them on your Xumo Stream Box.

I did have a few other questions when you have time to answer: 

- Are you receiving any error messages or codes on the equipment? 

- Do you have a Max subscription either set up through the box or directly through Max? I currently subscribe to Netflix, Disney+, Hulu, Prime Video, Max, SHOWTIME online (or app), and/or other over-the-top (OTT) subscription services. Can I keep watching on Xumo Stream Box using my existing login information?
Yes. You'll be asked to sign in once you open the app on Xumo Stream Box.