To obtain a license key for SecureCRT 7.2, you must purchase a license or have an active maintenance plan from the official developer, VanDyke Software. Official Licensing Information
Obtaining a Secure License Key
There are several ways to obtain a SecureCRT 7.2 license key: securecrt 72 license key
Upgrading: If you own a license for an older version, you may be eligible for upgrade pricing. To obtain a license key for SecureCRT 7