Lost XM Radio via the "Mode" button on steering wheel

(first of all I haven't done a search so I apologize if there is an exiting thread)

So as stated on the title, the MODE button on the steering is no longer able to pull up XM (still is able to find the AM/FM and the phone stuff). My subscription is fine (I have another 6 months) and this is evidenced by the fact that I can still access XM Satellite via the dash "Sat" button...

Any idea why I might lose XM via the MODE button? And more importantly, how do I set it again?

Thanks!