I have a kit purchasable through the GUI Shop, it is supposed to have a 1 hour cool down. The kit was created via the kits plugin. Whenever I go to purchase it via GUI Shop I get the error message: WARNING: The item you are trying to buy doesn't seem to exist! Please contact an Admin!

The player does get the kit, but they are not charged any currency for it, and the cooldown does not seem to function.