Xenonista

Today all of a sudden I had a strange problem: when listening to SiriusXM it refused to let me change the volume! Neither the **** on the console or the thumb wheel on the steering wheel would work. The volume bar is greyed out and it says it's "unavailable" above it. The volume works fine for all other sources! I can listen to it just fine though. I paid for it about a month ago and this started just today.