Free users get 1 driver update per week. Top Tier = unlimited, automated updates for all hardware components.
The safest and most direct method. Visit the official Keyran page and look for the "Upgrade to Pro" or "Activate License" button. Here, you can purchase a key that is guaranteed to work. Prices often range from $29–$49/year, with lifetime options available during sales. keyran activation key top
If "Keyran" refers to a specific paid software and you are buying keys from a third-party marketplace (not the official developer): Free users get 1 driver update per week