Would you like a to automate checking your Nitro Pro license status via their public API (if you own a license and have API access), or help with troubleshooting a real activation error ? I’m happy to assist with those.

If you are documenting licenses for a client or organization, several tools facilitate the "check": License Check for v13. - Activation/Installation

If your Nitro Pro 13 license check fails, do not panic. Follow this systematic troubleshooting guide: