By the way, do you know about the registration for Veterans home loan, so the reuse of a COE is a no, and there are no more requirements I can answer?
Yes, that is right. You did not meet the requirements
Of course. That document may well serve you as proof before your lender that you qualify for a Veterans home loan benefit.
Something else regarding Veterans home loan benefit, what are the next steps  for getting a VA direct or VA-backed home loan?