Plugin Help help with essentials group manager

i got essentials group manager for my server and i set everything up in the ranks and in the users ive checked multiple times and they are both correctly layed out but when i get into the server, the commands work just fine at first but any time i try to put someone in a group with a command like "manuadd siborgstare owner" nothing happens... nothing in consol, nothing in chat, im not put into that group same with trying to add myself to default and mod and all that. im going to put all the info i think that someone might need to help with this bellow

users.yml

Code:

users:
  Siborgstare:
    group: Owner
    subgroups: []
    permissions: []
  VEXwolf368:
    group: Owner
    subgroups: []
    permissions: []
  British_Cyber:
    group: Admin
    subgroups: []
    permissions: []

groups.yml

Code:

# Group inheritance
#
# Any inherited groups prefixed with a g: are global groups
# and are inherited from the GlobalGroups.yml.
#
# Groups without the g: prefix are groups local to this world
# and are defined in the this groups.yml file.
#
# Local group inheritances define your promotion tree when using 'manpromote/mandemote'

groups:
  Default:
    default: true
    permissions:
    - trade.allow.*
    - -bukkit.command.kill
    - g:essentials.warp
    - g:essentials.warp.list
    - g:essentials.warps.pvp
    - g:essentials.warps.wild
    - g:essentials.warps.wild2
    - g:Signshop.Permit
    - g:essentials.warps.shop
    inheritance: []
    info:
      prefix: '&e'
      build: false
      suffix: ''
  Builder:
    default: false
    permissions: []
    inheritance: []
    info:
      prefix: '&2'
      build: true
      suffix: ''
  Moderator:
    default: false
    permissions: []
    inheritance: []
    info:
      prefix: '&5'
      build: true
      suffix: ''
  Admin:
    default: false
    permissions:
    - g:adminessentials.*
    - g:essentials.warps.*
    - g:Signshop.Admin.*
    - g:trade.*
    - g:worldedit.*
    - g:bukkit.command.*
    inheritance: []
    info:
      prefix: '&cADMIN'
      build: true
      suffix: ''
  Owner:
    default: false
    permissions:
    - '*'
    - -vanish.effects.*
    - +vanish.effects.toggle.all
    inheritance: []
    info:
      prefix: '&4OWNER'
      build: true
      suffix: ''

all my plugins:
GroupManager, Vault, ClearLag, Spawner, WorldEdit, VoxelSniper, WorldGuard, EasySetSpawn, Essentials MassiveCore, Factions, SignShop, Trading, ChestShop.

please help as soon as possible, thank you, =)