how do i stop google assistant using tunein

I listen to my music through Sonos speakers and use Google assistant on  hubs to voice control these.

Up until this week BBC radio was available on TuneIn the radio app which Sonos used to radio stations. This now doesn't work which is fine as it advised I linked BBC sounds . I can listen to the BBC through the Sonos app all good. Problem is if I ask assistant to play BBC  radio 1 on sonos the reply is " playing BBC radio 1 from tune in " this results in silence .  I've deleted TuneIn from Sonos and it's still doing it. Even if I use the command "play BBC radio 1 from BBC" it either doesn't understand or just gives the same playing from TuneIn reply.  It also does it for all stations like radio X or heart . What command can I use or change stop assistant using TuneIn ?

Thanks sarah