powertutor
Hello,
Thank you for reaching out. This issue might be caused by an outdated protocol software. Please try updating the APK from the device’s app store while connected to the internet, as shown in the image below.

If the issue persists after updating, kindly download the two APK files from the provided link, save them to a USB drive, and install them via the device’s file manager. Once installed, restart the unit, and the problem should be resolved.
[Login to see the link]
Let us know if you need any further assistance!