Essentials kits not working

So I recently made a kit on server called miner for the GroupManager rank Elite. Elite has the permissions essentials.kit and essentials.kit.miner, yet it can't access them? Whenever my users attempt to it just says "You do not have the essentials.kit.miner permission". Here's my groups.yml file in world:

Elite:
default: false
permissions:
- essentials.back.ondeath
- essentials.hat
- essentials.me
- essentials.nick
- essentials.sethome.multiple
- essentials.sethome.multiple.tier2
- ranksign.buyrank.veteran
- silkspawners.place.*
- silkspawners.silkdrop.*
- essentials.kit
- essentials.kit.miner