Sirius XM will not play; timeout error message

For the past 3 days, I have been unable to access Sirius XM streams from HEOS. I can see the channel list as normal, but whenever I try to launch a channel, I receive a timeout / stream cannot be played error message each & every time.

I've logged out and back in to my SXM account multiple times. The login is accepted, but the streams will not play.

The native SXM streaming app works fine. The app on my Samsung TV works fine. Other music streaming services on HEOS work fine. But I cannot get Sirius XM to work!!!

I've opened a help ticket with Sirius XM.

Anyone else encountering this problem?