Georesonance
I have no difficulty in believing this is total nonsense and/or a scam.
However, I have difficulty in following motivation or what their "upside" could be.
If nothing is found their credibility is shot.
If old wreckage is found their credibility is still shot since they stated that nothing was "detected" at that site shortly before 370 disappeared
Their statement only makes sense if they really believe they've found something, however this doesn't make their clain any less bizarre.