Dear Customer, We apologize for any inconvenience caused.Note Xfinity supports both IR+RF control at the same time and its IR receiving range is very limited, if you are unable to learn from its original remote by IR---U or X or RF mode--X1S and the root cause is not from our side (Xfinity has a very small IR receiver, just to the right of the status light.)
For X remote, please go to our app- select this device-click three dots on the bottom right corner --press these virtual keys one by one to identify which one the right key is.
And another solution FYI: in our app--devices page--select Xfinity--Edit--Add/repair commands and select the related button--repair and do the first two Items on the next page.
If fails, kindly let us know the exact model of Xfinity and best to take a photo of its nameplate for our reference.Lastly---- There is one more solution FYI: in our app---Devices page--Add--Infrared--Learn from the original IR remote--Set Top Box--Only a power key--on the next page named" learning", please press and hold the button you want to learn on the remote of Xfinity and donot let it go and click "To learn" for Power button etc in our app--and then do the rest and after the learning is successful, let go of this button on the original remote finally.
The tricky thing is---you might have to press and hold the button you want to learn on the original remote first and then click the corresponding "To learn" in our app second and perform an IR learning eventually.If you'd like to return it, could you please provide your order number? Thank you.
SofaBaton