Customcrates (csgo).jar -

specializedcrates.give : Permission required to give keys or crate items to players.

/s crates reload : Applies any manual changes made to the configuration files without a server restart. The "CSGO" animation is one of several templates available. CustomCrates (CSGO).jar

/s crates give key : Grants keys to a specific player. specializedcrates

To manage the plugin or allow players to interact with it, you must configure permissions through a plugin like LuckPerms : CustomCrates (CSGO).jar