there was a video about it.
JTF donated some money to baruch marzel.
One time Chaim made a speech. A woman said that Itamar Ben Gvir said that Chaim had not given them any money, and that he was using the money for his own purposes.
JTF made a video showing the Proof that Chaim had paid them the money, and Itamar Ben Gvir apologised, retracted the claim, and now he works for JTF on the hebrew forum, and thus helps JTF grow its hebrew movement.
that is what I understand of it anyway. I have not recently seen the videos or AskJTFs where he explained it. Yaakov Ben Menashe would know it back to front, I am sure.
Chaim trusted baruch marzel with good reason. He was close to the Rabbi. But Marzel turned out to be - not a fraud, but a dishonest person.
Chaim apologised to everybody, and said he is not giving Baruch Marzel any more money.