Hi. Well i have the permission for members: essentials.kits.tools but they cant still use it, same with admins they have essentials.kits.* and nothing...
Be sure you have added the permission essentials.kit - this is the base permission to use the /kit command.
Well you will need players to have these permissions 1 - essentials.kit 2 - essentials.kits 3 - essentials.kits.{kit}
Remember my kid,add '-' to ALLOW player have that permission,add '- -' to DENY player to have that permission. Example "- Plugin.Permission.*" to ALLOW " - - Plugin.Permission.*" to DENY