Can't issue more shares that you have authorized in your state of incorporation.
If the O/S count HPNN gave to pinksheets is correct (above 2.5 billion shares) and we know they have only 2.5 billion shares authorized (Per Nevada SOS), then they could be in a bit of hot water with regulators.
Maybe thats why the DTCC took the action it did against HOP-ON, instituting clearing restrictions, etc.