As I understand it, BBC now requires you to login to use their services. TuneIn refused to/couldn't add that capability to their service, which went against the BBC requirements, hence no agreement, no service.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).