The most common mistake: AdminConfig must exist in both ServerScriptService AND ReplicatedStorage. The client can only read from ReplicatedStorage.

ReplicatedStorage/
  ├── AdminConfig    (ModuleScript — copy of AdminConfig.lua)
  ├── AdminRemotes   (ModuleScript — AdminRemotes.lua)
  └── AdminSystem/   (Folder — auto-created by AdminRemotes.lua)

ServerScriptService/
  ├── AdminConfig    (ModuleScript — AdminConfig.lua)
  └── AdminServer    (Script — AdminServer.lua)

StarterPlayerScripts/
  └── AdminClient    (LocalScript — AdminClient.lua)

ServerStorage/
  └── AdminItems/    (Folder — put your Tool objects here)

AdminConfig.Admins = {
    ["YourRobloxUsername"] = 4,  -- ← your username
}

AdminConfig.AdminIDs = {
    [YOUR_USER_ID_HERE] = 4,     -- ← your numeric UserID (more secure)
}

Find your UserID: go to your Roblox profile page. The number in the URL is your UserID.
Example: https://www.roblox.com/users/123456789/profile → UserID is 123456789

Put Tool objects inside ServerStorage > AdminItems folder.
Their name must match what's listed in AdminConfig.GiveableItems.

Press F4 to open the panel. You can change the key in AdminConfig.Settings.GUIKey.

Kick, Ban, Kill, Heal, God, Ungod, TP To, TP Here, Respawn, Mute, Unmute, Set Speed, Set Jump, Announce

Fling, Freeze, Spin, Disco, Minify, Giantify, Invisible, Blind, Fake Ban, Infinite Jump, Seizure, Loop Kill, No Gravity

Give items from ServerStorage/AdminItems + custom item name input

Nuke, Shutdown, Fog, Night, Day, Meteor Rain, Storm, Low/Normal Gravity, Disco Map, Kill All, Heal All, Speed All, Reset Speed

Persistent bans (DataStore), unban by UserID

Key: F4 (change in AdminConfig.Settings.GUIKey)
Draggable: Yes — drag the title bar
Security: All actions server-validated. Clients cannot spoof admin level.