Before the pronunciation worked, now all voices didn’t work
I can see a lot of voices in the app, but none of them work.
The possible issue is related to the “Google Speech Services” module and normally happens on Samsung devices with Android 12.
Go to Android settings, settings -> General management -> Text-to-speech
In the window, try to play voices for the learning language.
Select the language and press the “Play” button.
If it doesn’t work (don’t play sound). Press on the settings icon in the same window.
You will see the list and select the “Install voice data” item
Select your voices and Download the voices on the device.
After that, the Text-to-speech should work.