Doesn’t pronounce the words – Duolingo - Language Lessons Review

I’m trying to learn Vietnamese and the button to hear the words doesn’t work. I press it and nothing happens. There seems to be no built in support or help desk situation in-app so I can’t ask why it’s not working or if that’s not a free feature. It’s the only reason I downloaded this app so I’m pretty disappointed.
Review by Organic Sam on Duolingo - Language Lessons.