Android sounds are not reliable

Can you, please, better specify how? I converted a project from 4.22 to 4.24 (Android project), and now the audio is not working.

EDIT: On a brand-new project the audio works (empty map with a blueprint that spawn a 2D sound. In the old project, with the exact same setup, same blueprint, same audio file, empty map *with this blueprint only), it doesn’t work. Maybe same setting? Not sure which one…