Before the pronunciation worked, now all voices didn’t work

Problem: 
I can see a lot of voices in the app, but none of them work.

Before the pronunciation worked, now all voices didn't 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

Before the pronunciation worked, now all voices didn't work

In the window, try to play voices for the learning language.
Select the language and press the “Play” button.

Before the pronunciation worked, now all voices didn't work

If it doesn’t work (don’t play sound). Press on the settings icon in the same window.

Before the pronunciation worked, now all voices didn't work

You will see the list and select the “Install voice data” item

Before the pronunciation worked, now all voices didn't work

Select your voices and Download the voices on the device.

Before the pronunciation worked, now all voices didn't work

After that, the Text-to-speech should work.