How to use the app

Hi I was able to compile and run the app. I start the app and press command + n and it shows the output brainwaves correctly. Next I click command + o, turn on 'training mode' button and start, and finish the training session. However, in the inference mode (I guess I can enter it by turning 'training mode' button off and click 'start') the characters keep blinking and I cannot see anything or type anything. Could anyone give me instructions on how to use this app? Thank you!