Keys

Each crate can use PHYSICAL, VIRTUAL or BOTH key mode. Physical keys are customized ItemStacks and can be traded or stored like items unless another plugin restricts them. Virtual keys are counters associated with a player and avoid item loss or duplication through inventories.

The give/key command accepts an explicit physical or virtual mode; without it, the crate's configured default is used. Opening consumes the appropriate key only after validation. If a player reports that a key does not work, verify crate ID, key mode and whether an older physical item was generated before the crate key item was edited.