OK, well the syncing explains why your data is not showing up. Unfortunately I cannot tell you how to sync between PC and Premium. There must be a "help" file within FitDay PC. Have you looked?
Perhaps someone else who has synced can help you with this. In the mean time, with your FD PC, do a thorough search of all the menu options, looking for a help file or the Sync function.
Hang in there. You'll really enjoy the software and you'll find that it was a wise purchase. There is always a learning curve with all new software.
Think of food as fuel for the body instead of feeding emotions