App tells me sonar is not available on my device, but the graph are clearly showing it's working

Hi there!

I just installed Sleep As Android on my new phone (Nothing Phone 2),and I’m having issues getting the sonar system to work.

Anytime I want to enable it, I straight up get a message telling me it’s not going to work, then it takes me to this test page, where after loading for about 10 seconds, it shows the graph clearly detecting anytime I move in my bed.
Still, after a few seconds, the app tells me that sonar is not available on my device, and that I cannot use it.
Then the app switches back to accelerometer by itself.

Am I wrong here in thinking that sonar is working?

Thank you very much for your help!

Hi @Nate_Dbc, sonar signal below 100 is too low to be used for proper detection of your movement. The average signal strength is about ~1000.
Do you see this low signal on all frequencies?
Are there any sound enhancing features active on this device (like Adaptive sound, Sound profiles, Equalizers, Dolby…)? Also make sure the media sound is not muted by any DND mode.