Hello @NickB085 ,
I checked your Library and it looked like your most recent PDF uploads had their first pages generated as well. I also tested in my account for uploading directly into the Library, uploading during the PDF-to-email process, and while working in the email editor, and was able to get a first page image generated each time. Are you still experiencing issues with the first page not generating when you upload your PDF? Or as a troubleshooting step, are you able to see the first page generated after clearing your cache, or in other browsers?