BUT!!! please also do your own tests in the tester and in a demo account and only use the settings you feel comfortable with. My settings are not a recommendation or advice by any means.
The EA is working very well on the pair that you have optimized. I have not put it on the xauusd, because this pair is often manipulated by agreement of the big banks with the Federal Reserve, that is why the price is so low. On the other hand, the Index that is composed of the valuation of 100 companies, would be much more difficult to manipulate its prices, and therefore works with the rules of the market. The EA has been profitable in all its operations, although they are not many, but each one is very profitable. I think that the Achilles heel of this EA, may be in the future the lack of self-optimization. If the author could put this algorithm on it, the EA would be the best by far of all, mind you, it is only my opinion.
Hey, make sure to watch the videos about the EA on my YouTube channel. I also show my USTEC (US100) settings: https://www.youtube.com/watch?v=E6qeu5xzrZM
BUT!!! please also do your own tests in the tester and in a demo account and only use the settings you feel comfortable with. My settings are not a recommendation or advice by any means.