Can't connect to UPnP device

I am running an installation of BalenaSound on a Rapsberry Pi 3B+. Audirvana shows it as a network device in the sound output menu, but when clicked, it selects for a fraction of a second then reselects my default audio out. My debut info is here:

Audirvana Mac Version 3.5.44 (3574)
macOS 11.0.1 with 8192MB RAM

Registered to TNT team

SIGNAL PROCESSING:

Polarity Inversion:
	Globally: OFF
	Per track: ON
Effects plugins NOT ACTIVE

UPSAMPLING:
SoX with Power Of Two upsampling
SoX filter parameters
Bandwidth at 0dB = 99.5
Filter max length = 30000
Anti-aliasing = 100
Phase = 0

AUDIO VOLUME:
Max allowed volume: 100
Replay Gain: by album
SW volume control: OFF

LIBRARY SETTINGS:
Sync list: 1 folders
AUTO: /Volumes/lipu musi/Media.localized
iTunes/Music library synchronization: not synchronized
Library database path: /Users/samcorbishley/Library/Application Support/Audirvana/AudirvanaPlusDatabaseV2.sqlite

ACTIVE STREAMING SERVICES

=================== AUDIO DEVICE ========================

CoreAudio audio path, buffer I/O frame size: 512

Max. memory for audio buffers: 1758MB

Local Audio Engine:
Exclusive access: Enabled
Integer mode: Enabled

Preferred device:
balenaSound UPnP d0a7
Model UID:Ivo Clarysse, Henner Zeller balenaSound UPnP d0a7
UID:uuid:d0a713123d16a67a3f26ab2e8e934dc4

Active Sample Rate: 44.1kHz
Hog Mode is off

Bridge settings:
Sample rate limitation: none
Sample rate switching latency: none
Limit bitdepth to 24bit: OFF
Mute during sample rate change: OFF

Selected device:
Local audio device
ID 0x5c MacBook Pro Speakers Manufacturer:Apple Inc.
Model UID:Speaker UID:BuiltInSpeakerDevice

4 available sample rates up to 96000Hz
44100
48000
88200
96000
Audio buffer frame size : 14 to 4096 frames
Current I/O buffer frame size : 512
Volume Control
Physical: Yes
Virtual: Yes
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: DSD via PCM 1.1
Device audio channels
Preferred stereo channels L:1 R:2
Channel bitmap: Ox3, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1

Audio channels in use
Number of channels: 2
Use as stereo device only: No
Simple stereo device: Yes

1 output streams:
Number of active channels: 2, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1

Stream ID 0x5d 2 channels starting at 1
4 virtual formats:
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz

4 physical formats
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz

Local devices found : 2
Device #0: ID 0x5c MacBook Pro Speakers Manufacturer: Apple Inc. Model UID: Speaker UID: BuiltInSpeakerDevice
Device #1: ID 0x37 eqMac Manufacturer: Bitgapp Model UID: EQMDeviceModelUID UID: EQMDevice

UPnP devices found : 1
Device #0: ID 0x0 balenaSound UPnP d0a7 UID: uuid:d0a713123d16a67a3f26ab2e8e934dc4 Location: http://192.168.1.162:49494/description.xml