Hmm, that sounds odd.
If I had to guess off the top of my head, I'd have to ask you to check if you are definitely playing the full game and not the demo. As I recall (and it's been a while since I played it myself), the demo ends after the second day.
If you are definitely playing the full game (the file size should be about 260MB) then please email me at support@blackcross-taylor.com and I will get some more information from you to investigate further.