We have no idea why he asked for that information. I think the most likely scenario was that it was simply a stalling tactic. Since no payments were made even for PPT operators who complied, it's unlikely he ever intended to make payments.

Q: Why did you require PPT operators to submit their account holders information?
A: There’re a few reasons for doing this.  The largest of which was to remove the PPT operators from the added risk of their users claiming
they were not paid once the main account was paid. The other reasons can not be disclosed.