“If he is lying about his supernatural abilities, why are there so many video testimonials on youtube of people who were helped by him?”
I haven’t seen the testimonials so I can’t comment on them but I will say that if someone who is not steeped in shas and poskim does in fact have supernatural abilities then one should stay far far away. Chazal gave us a very simple formula- im harav domeh limalach hashem yivakesh torah mipihu… And no, a “malach” doesn’t mean someone who can perform “miracles”