It is scam if its expensive!! It is very simplle ill explain how to trade the Gaps:
Ill take examplle todays gap on EURUSD. Do you seee the 50 pips gap from Friday close and today open? So the point is that 90% of cases price should back on the gap start place, but only if Gap is 25 pips and more!!!
So the gap strategy require now to go long from open price today on EU at least 25(quarter) pips, and add BE at 0 after 25th pip. If the Gap is 25-30 pips then Target is 25 pips also SL is same!