Legal
Every script is licensed, not sold. This is what a license key lets you do, and how the key itself works.
Each purchase issues one license key for one script. A key works on one FiveM server at a time: the script checks its key with this site when the server starts, and a key bound to a different server is refused.
A key is bound to the first server that starts with it. To move the script to another server, ask in the Discord and the key is released for you; the next server that starts with it takes it over.
Sharing, reselling or publishing the script's files or its license key, and running one key on more than one server, are not permitted.
A license is revoked when its purchase is refunded or charged back. A revoked key stops working the next time the server starts, and the Discord customer role is removed when it was your last active license.