Invalid license key.
This message could be appearing due to the following reasons:
You can enter your new license key here:
- You have not yet installed your system by visiting /install.php
- http://nmscripts.com is currently down
- You are missing a dependency like cURL
- Your license is already in use with a different IP, go to nmscripts.com and hit "Delete Host" or whitelist your new IP to solve this
- The table "settings" in your MySQL database does not exist, or is empty