Why is my android box remote not working?

Make sure none of the remote buttons are jammed. Reset the remote. The remote may not work temporarily due to poor contact of the battery or static electricity. Remove the batteries from the remote.

How can I control my android box without the remote?

All you have to do is connect your USB or wireless keyboard and mouse. And you will be able to control your Android TV box using the mouse pointer or arrow keys on the keyboard. However, if it doesn’t work, you can manually enable it in the Settings.