During the purchase process, besides your payment email you also had an option to enter your access email. That access email will become your Sign-up Email ID.
Based on the sales page you purchased from, your Access Email option would be different. So, I'd try to give you an overview of the different scenarios:
If you purchased from our sales page which usages PayDotCom.com checkout, here is what you would've seen:
If you purchased from our sales page which usages ClickBank.com checkout, here is what you would've seen:
Very Important Note:
1. Always use your own email for access which you have direct access and you are able to manage it.
2. Never use a forwarding only email ID for your access.
3. Never let the emails from this email sender firstname.lastname@example.org to go to Spam or Junk Email. If you ever find an email from this sender in Spam or Junk Email make sure you immediately white-list our sender email@example.com