Cut and paste if in doubt. WinProxy is a different product, sold by a different company. We do offer competitive upgrades, but not via the on-line shopping pages. I just got my registration number for 3.0, and WinProxy keeps telling me Serial Number Invalid when I try to put the number in. People are inadvertently putting the registration number into version 2.1 instead of 3.0.
People are mis-typing the number.
The Betas all have a hard-coded timeout that you cannot change, and they will start timing out in late October. The release 3.0 will pick up your current settings from the beta when you install it. The 2.1 version will not accept a 3.0 number. There are several circumstances where you could be inadvertently starting your old 2.1 version instead of your new 3.0 version. You can take a look under Help About to find the version number of the copy you have running, or take a look at the drop-down menus.