Apple Music - Certificate for this server is invalid

When trying to play a specific Danish radio station (DR P3) on HomePod (or any of my other Apple devices) it does not work anymore. On the iPhone I get the message “Certificate for this server is invalid”.

This is so annoying - we only use this Radio Station and it has been working for multiple years and now suddenly it’s not.

Hope you are able to help.

FYI: I have tried to follow some links in here but they did not help or I did not understand what to dol…