Due to a recent update of the Raspbian Kernel (version 5.10 and newer), the audiosense-pi module could no longer be used to record the I2S signal from the DABBoard. This issue was now finally solved. You can use a new overlay file to record I2S again and get the full digital audio to the Raspberry Pi.
Instructions how to do that are here:
Use this overlay file to create DAB+ recordings, play DAB+ over the Raspberry Pi HDMI connector or even through a bluetooth speaker.