What are the possible causes if there's no sound at all, using FMOD?

Hi,

I'm struggling with this for a long time, I just simply can't get any sound played. I checked a lot of tutorials and forums, tried a lot of ways using FMOD StudioEventEmitter, FMOD_StudioSystem.instance.GetEvent to play FMOD assets but nothing worked.

The banks are imported properly and the FMOD events are initialized properly, e.g. I don't get any exception that the event's url is wrong or something is missing.

The FMOD Listener is set already to the mainCamera, as I read that it can be a possible cause of the problem. I also read that using 3D sound events can be a problematic.

Could you add me some hints about the most known causes if the sound is not working at all? What am I missing? What do you think the best solution for adding 3D FMOD sound events could be?

Thanks a lot!