I have a 2020 Platinum and the same SiriusXM problem started recently. It works with first startup of the day, but then does not work on next startups. All other sources work (AM, FM, USB attachments...). Another site suggested Ford is aware and there should be a SYNC update coming. Another suggestion was a soft reset (press and hold FFW & PLAY). Have not tried it yet, but this is very frustrating.
I’m having this problem too. It seems to be related to how long the vehicle has been shut off. When I stop for gas, that’s not long enough and the satellite freezes (song and station do not update or play). But stop for longer (haven’t tested but overnight always seems to work) and it comes back. Not related to plugging in a phone or CarPlay from what I’ve seen.