By "specifically those people who purchased within this 24-hour-timeframe" you mean "ONLY those should get in touch" or "ideally those people, but people who bought at a different time are also welcome"? 
At this time, only those that purchased within that timeframe will receive a response. If you wish to provide information, you're welcome to do so via email: rich@cipherblade.com -- but due to volume of data such an open door may result in, I can't promise a response beyond acknowledging receipt.