[amsat-bb] Old Version of Satpc32

I have an old version of SatPC32 pre windows 10. I think I bought it about 4  years ago. Can I upgrade or do I need to buy a new Version? I down loaded the current demo program and I though I might be able to use it. I have the serial number (not sure if that is password) GI10******* on the disk cover.Tnx 73 Mike K4MIA