Glad you liked the music and style! You are right that the instructions are confusing, we could have explained it better.
The progress bar indicates when the next failure in the robot will happen: when it reaches 0, the robot gets an additional bug or error which affects its mobility. That is independent on the color of the zones, which indicate that you have to collect the items before they reach the level above red.
We'll try to make it more clear in the future. Many thanks for the detailed feedback and honest review!