Home › Forums › SharewareOnSale Deals Discussion › O&O Defrag 23 Pro / Dec 21 2020 › Reply To: O&O Defrag 23 Pro / Dec 21 2020 Dec 21, 2020 at 7:51 pm #16976554 Quote Neil11Guest I’d love to run this program but once I enter my email address to obtain the serial number nothing appears except for a Thank You screen.