How long does it take to pass the challenge with the Robot?

The Robot opens trades whenever the price touches the envelope indicator and has the confirmation from the other indicators. So it depends entirely on market volatility. The more volatile the market is, the more trades there will be. 

The backtest shows that it would take between 20 and 60 days on average to pass a challenge. 

If you use the scaling up system from Petko, the time to pass would be reduced.