Paste your 25-character (format: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX) into the appropriate field.
A license activation key is a unique string of alphanumeric characters issued by the software developer (Nano Antivirus Ltd.) to a legitimate user. This key serves as a digital signature that verifies the user has purchased the right to use the software. Nano Antivirus Licence Activation Key