To fix this issue, first make sure that your device is connected properly
you can find instructions for how to properly connect your device here
simply unplug ONLY the power from ONLY your Talkit device for 1 minute and plug it back in. Then, wait 5 minutes for the Talkit device to fully boot up.
If it still is not working you can Reset the device. You can find the instructions here for resetting your Talkit device
RESET YOUR DEVICE