If you already own a Magic Tagger license, then you can get a new license key here for free.
Download Magic Tagger and install it on your computer.
Start Magic Tagger on your computer (not on a different computer, this won't work).
Within the menu of the Magic Tagger app, click on Extras and then on Program registration.
Within the appearing window, your personal app key is displayed (see screenshot below).
Double-click on your personal app key so that it becomes selected. Now right-click on it and then choose Copy from the context menu (see screenshot below).
Paste your just now copied personal app key into the input field below. To do so, right-click into the input field and select Paste from the context menu.
Enter the email address which you used to order Magic Tagger (may not be the same as your current email address):
Please enter the following additional data:
Click on this button: