PEX Setting for my minecraft server do not work!!

Whatever I do i cna not get my PEX settings to work for my minecraft server. This is my permissions.yml ive looked all over the web and no matter what i do nothing helps or benifits me!


groups:
  Member:
    build: true
    permissions:
    - essentials.help
    - essentials.rules
    - essentials.motd
    - modifyworld.chat
    - essentials.help
    - essentials.rules
    - essentials.motd
    - essentials.afk
    - essentials.back
    - essentials.back.ondeath
    - essentials.depth
    - essentials.delhome
    - essentials.help
    - essentials.home
    - essentials.kit
    - essentials.kit.tools
    - essentials.kit.test
    - essentials.list
    - essentials.mail
    - essentials.mail.send
    - essentials.me
    - essentials.motd
    - essentials.msg
    - essentials.ping
    - essentials.r
    - essentials.rules
    - essentials.seen
    - essentials.sethome
    - essentials.signs.use.disposal
    - essentials.spawn
    - essentials.suicide
    - essentials.tpa
    - essentials.tpaccept
    - essentials.tpahere
    - essentials.tpdeny
    -essentials.bal
    options:
      prefix: '&2[&aMember&2]&7 '
      default: true
  VIP:
    inheritance:
    - Guest
    - Member
    build: true
    permissions:
    - essentials.help
    - essentials.rules
    - essentials.motd
    options:
      prefix: '&6[&eVIP&6]&7 '
      default: false
  Mod:
    inheritance:
    - VIP
    - Member
    - Guest
    build: true
    permissions:
    - essentials.sethome.multiple.staff
    - essentials.helpop
    - essentials.home.others
    - essentials.nick
    - essentials.warp
    - essentials.warp.list
    options:
      prefix: '&1[&9Mod&1]&f '
      default: false
  Admin:
    inheritance:
    - Mod
    - VIP
    - Member
    - Guest
    build: true
    permissions:
    - essentials.gamemode
    - essentials.give
    - essentials.god
    options:
      prefix: '&9[&bAdmin&9]&f '
      default: false
  Owner:
    options:
      prefix: '&b[Owner]'
      suffix: '&f'
      default: false
    inheritance:
    - admin
    permissions:
    - permissions.*
 users:
  ce9e93fe-f2e9-4da7-8a78-eea3c2ff0490:
    permissions:
    - permission.*
    options:
      name: Kingzzor