is resonance also set as your Spatialization Plug In under platform in Project Settings? my understanding is that both need to be enabled on the platform you are using for the reverb to work (you do not, however, have to use resonanace’s occlusion). also, installing the latest version of resonance 1.21 (which requires a special build of ue4) may solve the problem:
https://developers.google.com/resonance-audio/develop/unreal/getting-started
- Gain access to Epic’s GitHub repository.
- Download or clone the 4.19-resonance-audio branch on the repository.
Note that this page displays a 404 error if you have not yet gained access to Epic’s GitHub repository. - Follow Epic’s instructions on Building Unreal Engine from Source.