Can’t select artists from Apple Music on HomePod Mini

I have three HomePod mini’s in my house, and I have used them for many years to listen to music from my Apple Music account or to stream radio stations. All run the latest version of the operating system (18.3). Over the last couple of months I have been unable to play music from Apple Music on them. If I say, “hey Siri, play Paramore (or any other band name)”, the HomePod replies “ I cannot find Paramore in your Apple Music library”. This happens with any band in my library. However, if I say “hey Siri, play music”, then the HomePods will play music at random from my library. I’ve tried resetting the HomePods but it makes no difference. The only way to get the artist I want to play on the HomePods is to manually select them on my iPhone and then stream them onto the HomePods. How can I get the HomePods to work by voice command again?