I am using KB2003, OOS 126.96.36.199 KB05BAIf you could at least tell me how the app doesn't work, I could at least help.
Since all I hear is that it doesn't work, I can't do anything.
The next question would be to clarify what kind of smartphone you use? What version of OOS are you on?
I have so far only read out that it does not work on a 7tpro and on a custom rom, but from OOS I have heard nothing?
Attached I have just made the trouble to create a small video, which shows that Dolby works.
I mention again that I did not create the Magisk Dolby file, but only found out that it works with the OnePlus8T on OOS!