Bank file loaded, but still no sound

My game uses Fmod and is packaged into two versions: Android and OpenHarmony. Games on the Android platform have sound, while games on OpenHarmony have no sound.
Both Android and OpenHarmony indicate that the bank has loaded successfully and cannot find fmod_gain.so.
During runtime, the blueprint printing shows that the bank has been loaded.

Is this question related to fmod_gain and fmod_distance_filter?
How can I successfully load these two plugins?
Do I need to import the libovrfmod.so file?
Where can I download these files?

UE4.27

Hi,

Unfortunately, we currently do not support OpenHarmony on Unreal Engine. How are you running UE on OpenHarmony?

Can you send me any documentation for the fmod_distance_filter? I am not sure what you are referencing.

For loading plugins on UE please see: Unreal Integration | Plugins - Adding plugins to the project.

Can you point me towards where you are seeing this?

Unfortunately, I do not know. You may be looking for the Meta Quest downloads?