The keyboard im using is on the compatibility list. Its
Digicom
WKEYPE01 Wireless 2.4 GHz Keyboard-mouse Combo, also known as Riitek RT-MWK01 and Prodige Nanox

I’ve discovered that if I delete the ES_config file, they keyboard will work. I then map the ES buttons to my Xbox 360 controller, which allows me to manipulate the menu. But after a reboot, I’m back to no characters and not being able to move around ES.