I have not found a place on the website to identify myself and get the Pro version for which I have made the purchase. There is no place to identify myself to get the Pro version.
You should receive a licence, a text file by email that you have to copy into the folder where HWinfo is installed. And once you restart HWinfo it will pick it up and start with the pro licence features
A few minutes maximum. Make sure to also check your spam/junk folders, the e-mail might have landed there.
If you haven't received the e-mail, please contact me via direct message and provide some details (e-mail, order number) that I can use to locate your order.