Came to this forum seeking solution as to why Peacock wont loan on the xfinity flex box. Found hundreds of like questions but no solutions from xfinity. <Edited>. I didn't want the <Edited> thing in the first place, and it doesn't really offer any more than I already get with my free Samsung TV plus. <Edited>
Try rebooting your device and see if you pick up the latest firmware. you need a 4.2 version for it to work.