: For physical copies, the activation number is typically found in the included printed instruction booklet or on the packaging. Activation Process

Yes. Keys found online or shared beyond licensed computers are deactivated without refund.

You can confirm your version is "verified" by checking the section or trying to access the "Let's Check" function in the Analysis tab. If these features work and no "Unregistered" watermark appears, your key is successfully verified.

Getting the Most Out of Fritz 18: Everything You Need to Know About Activation

Select in the Fritz 18 menu to generate a unique Hardware Key .