Only Do this as a Last Resort
A power cycle of your device, and fixing your app, and checking your internet should Always be done first
Follow the instructions for specific device below:
Softbox Buzz
Go to Settings-- Then Device Preferences, then About. then Factory reset and erase everything
This will not hurt anything. Be sure that you log in with your user and password after that using this info.
Follow this to set up your box now
Softbox Go-Black box- ONN TV box
Softbox Go WHITE BOX- Chromecast
Make sure the Box is turned on.
Then Press and Hold down the button on the box. Keep holding it down for 20 Seconds until you see the box is factory resetting.