I am not understanding which pair to trade for. Can the author explain me how to use the EA. It has nothing to control. I bought the robot but i cannot customise it. If the author can provide some set file for some particular pairs then it will be fine.

Hi! Just run an optimization on Your preferred market as explained here https://www.metatrader5.com/en/terminal/help/algotrading/strategy_optimization

The EA is already optimized in all parts and You just need to optimize the lookback period depending on the market You trade.

To anable the EA just attach It to any chart with Your preferred market.