(Now fixed) Server 1.30.1..6550 / Sonos can see Plex but Plex cannot see Sonos

Plex Media Server
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1

Server Version#: 1.30.1.6550
Player Version#: 4.98.2

Sonos player can see and play Plex library but Plex player can no longer see any Sonos devices - prompts for login, goes through authentication, then just goes back to ‘Link your Sonos account’.

2

Now fixed in latest beta. Thanks