My appologies that we took a good bit longer than we would have liked finding the issue.
However once identified; A few cups of tea later and it is resolved.
Hope to see you all back soon!
P.s. CrateKeys will be down for further diagnostics.
Update: Crate Keys are back and running on an all new Premium Plugin! You can now preview Crate Rewards by left-clicking the crates at spawn.
Currently, the Legacy and Forgemaster Crates are fully functional with additional rewards! The Voting/Reward Crate will be back ASAP!