Some devices even need to reboot after installing new apps, even
multiple times, and trying to open/install them until they work.
Make sure you've given the app write permissions to external
storage.
4.1.2 Problem: The app doesn't recognize anything you
say.
Possible solutions:
Make sure you've pressed the "Record" button and try speaking loudly
and clearly again in a quiet environment and at a rate of one or two
words per second.
Connect your device to the network and try again, even on a
different network. This happens because some devices don't have a
connection to the necessary online services, or the network you use
requires proxy settings.
Install, reinstall, and update the app.
Make sure you have given the app microphone permissions.
4.1.3 Problem: The app does not record or transcribe or
display on screen.
Due to limited resources for development and testing, not all devices
work properly, especially those with newer versions of the operating
system.
Possible solutions:
Make sure your device is compatible with the app by checking the
operating system version.