Sounds not working on anymore

I have a game on that was working fine. Now some sounds are not playing.
Something changed? how to get them playing again?

Maybe try using “preload sound” at the beginning of the scene. Loading music and sounds takes time, especially in the browser.

I did. I think it has to do with MP3 vs WAV format. Some browsers won’t play mp3. But not sure if it’s the issue because it used to work on all browsers , now it doesn’t