My Sonos One has suddenly started requesting a password for AirPlay. I also have a Symphonisk on the same network which is working fine (not requesting a password). Previously for several months both have been working fine, including airplay with no password. Recently I bought a HomePod mini which is on the same network - that’s the only recent change I know of. Now I can airplay to the Symphonisk or the HomePod mini but when I try to airplay to the Sonos One, from any of our Apple devices (all of which previously worked fine), it requests a password.
To summarise: Symphonisk, HomePod mini, Sonos One on the network. Several iPhones in use across the family. Everything works fine except when any iPhone tries to airplay to the Sonos One, it needs a password.
What do I do?