No sound through the interface on fresh install RPi4 with Justboom digi

Volumio Information

Volumio Version: 2.806
Hardware: RPi 4
DAC: Justboom Digi

I get no sound after a fresh install. The justboom digi was automatically detected and there was no error during the first setup. I have installed the spotify plugins and tried also webradio and local file playing, none resulted in any sound being played.

I noticed that /boot/config.txt did contain dtparam=audio=on instead of dtparam=audio=off as I had seen on another forum. After that change, speaker-test does play sound and aplay -l result in :
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpijustboomd [snd_rpi_justboom_digi], device 0: JustBoom Digi HiFi wm8804-spdif-0 [JustBoom Digi HiFi wm8804-spdif-0]
Subdevices: 1/1
Subdevice #0: subdevice #0

But I still am not able to get any sound when triggering anything through the interface (spotify, webradio and local file). I have also noticed that some file on the system reference : plughw:2,0 as the audio output and I do not know where that would come from, but might be an hint on what is going on.

Does anyone have an idea?

please restore this string, your I2S DAC needs to be mapped as card2