I also have both BTC robots on my MT5. I think it only takes very high probability trades though. It does not trade frequently so perhaps it has not taken trades because the market has not produced the criteria for the robot to trade.
The BTC/USD Bot Just took 4 Trades in the past month, but all of them were a win. I absolutely prefer less Trades with a Higher win rate :) Just Imagine you would have a 10k account, with 4 Trades in the past month and a Risk to reward Ratio of 1:2, while risking 1%, you would have earned 8% or 800$ in one month!!