Siri request to play radio (classical king fm) no longer works

For over 3 years we start every day asking “Hey Siri, play classical king fm” and instantly classical king fm by iheartradio starts playing.

This no longer works as of the last few weeks (likely ios18 release time). Instead, classical bangers or some other random Apple Music will play.

rephrasing to “Siri play king fm” might work, but usually doesn’t.

below I’ve recreated the results using type to Siri to show the result.

this is beyond maddening.

is anyone else experiencing this kind of issue since iOS 18?