How long before Xfinity on Demand app appears on new Roamio?

I've had a Roamio Plus with a Mini for about a year. That Roamio Plus#1 got XOD one morning several months ago and so did the Mini.



I just bought a new Roamio plus and moved the Mini to Roamio#2 as the host. There is no XOD app showing on either the Roamio#2 and it has disappeared from the Mini. Any idea how long before the XOD shows up? Everything else is working perfectly