LaserSoft Imaging

I recently tested the software of Silverfish using the demo and decided to purchase the full version, however after receiving confirmation with the serial number which I registered and consequently entered when prompted, I am still running the demo version???

I can't seem to upgrade this version to the one purchased.
I am using Epsom perfection 3200 photo scanner on I Mac OS X 10.11

Dear customer,

Please check the welcome screen's Service dialog.
Your current license is shown at the top of that dialog.
Below it you will find the "upgrade license" button which allows you to exchange a serial number.

kind regards,
Arne