Plugin Help PermissionsEx Not working

Here is my PermissionsEx file. I do not know what is wrong!! Can somebody please help?

groups:
Member:
default: true
permissions:
- modifyworld.*
- essentials.build
- essentials.balance
- essentials.afk
- essentials.mail.send
- essentials.msg
- essentials.realname
- essentials.spawn
- essentials.tpa
- essentials.tpaccept
- kitpvp.spy
- kitpvp.soup
- kitpvp.archer
- essentials.tpa
- arena.join.capturetheflag
- arena.leave
- blockhunt.info
- blockhunt.help
- blockhunt.join
- blockhunt.leave
- bmt.default
- blockhunt.list
- blockhunt.shop
- chestshop.shop.create
- chestshop.shop.buy
- chestshop.shop.sell
- worldportal.teleport
- worldportal.use
- sg.arena.join
- essentials.help
- essentials.balance
- sg.arena.vote
- av.hub
- sg.arena.leave
options:
rank: '1000'
prefix: '&2[&8Member&2] &7'
Iron_Donor:
default: false
permissions:
- essentials.joinfullserver
- kitpvp.snowman
Inheritance:
- Member
options:
rank: '900'
prefix: '&2[&8Iron&2] &7'
Gold_Donor:
default: false
permissions:
- kitpvp.pyro
- acc.helperchat.speak
- essentials.hat
Inheritance:
- Iron_Donor
options:
rank: '800'
prefix: '&2[&8Gold&2] &7'
Diamond_Donor:
default: false
permissions:
- kitpvp.creeper
- essentials.afk
Inheritance:
- Gold_Donor
options:
rank: '700'
prefix: '&2[&8Diamond&2] &7'
Architect:
default: false
permissions:
- mgskywars.setup
Inheritance:
- Diamond_Donor
options:
rank: '600'
prefix: '&2[&8Architect&2] &7'
VIP:
default: false
permissions:
- av.hubkit
- essentials.broadcast
Inheritance:
- Diamond_Donor
options:
rank: '500'
prefix: '&2[&8VIP&2] &7'
MOD:
default: false
permissions:
- essentials.tempban
- report.read
- essentials.kick
- essentials.mute
- acwarn.use
- acc.staffchat.speak
- acc.modchat.speak
Inheritance:
- VIP
options:
rank: '400'
prefix: '&2[&8MOD&2] &7'
ADMIN:
default: false
permissions:
- worldedit.*
- worldguard.*
- bukkit.commands.*
- essentials.gamemode
- essentials.ban
Inheritance:
- Architect
- MOD
options:
rank: '300'
prefix: '&2[&8ADMIN&2] &7'
Dev:
default: false
permissions:
- essentials.op
Inheritance:
- ADMIN
options:
rank: '200'
prefix: '&2[&8Dev&2] &7'
Owner:
default: false
permissions:
- essentials.op
options:
rank: '1'
prefix: '&2[&8Owner&2] &7'
Users:
AmericanRedBird:
group:
- Owner
Gajam:
group:
-Owner
Gajammer:
group:
- ADMIN
mrm124789:
group:
- ADMIN
knightfire322:
group:
- MOD
Isster17:
group:
- MOD

 

Is anyone going to help?!?!?