I too am having this problem, and have been for about 6 months. The Xfinity techs are no help, especially the ones offshore.... I have an IPAD 2. I deleted the App and reloaded it from the App store. Here is what happened when I did. The message I get is: "The current version (of Xfinity Stream) requires IOS 10.0 or later, but you can download the last compatible version".........
NOTE: ( the latest IOS version on the IPAD 2 is 9.3.5), So I downloaded the latest compatible version, it and it does not work.
So, in desperation I called APPLE. Apple told me that the latest version of the IOS available on my IPAD 2, is 9.3.5, (I have it). Apple also told me that the "last compatible version of Xfinity Stream DOES NOT WORK with IOS 9.3.5." APPLE also told me that they have been getting hundreds of calls about this from Xfinity Stream users. APPLE SAID ME THAT COMCAST KNOWS ABOUT THIS PROBLEM, AND IS DOING NOTHING ABOUT IT (including telling the users). Apple told me that if Comcast does not fix the problem, in order to use the Xfinity Stream App, I will have to buy a newer IPAD.
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