Was that done at the time the donations were taken or long after?
They started the campaign with the “100% for the wall” slogan, and they took no money. Bannon came on board to help manage it, and he said they deserved some money to help live, and they did. But they didn’t change the promise about 100% for the wall, and then set up a corporation to funnel money to, so they could say they weren’t taking money, while receiving it through the other corporation.
You can read the indictment, Bannon screwed himself and the the original founders.