Making a part anchored doesn't stop it from falling?

I'm making a lightning ability sort of thing, and I'm working on the first move. It's supposed to make a ball of lightning appear on the user's hand, kind of like a Chidori if you've seen Naruto, and the user can press the key again to launch the lightning ball and cause an explosion, not so much like a Chidori. The explosion part hasn't been implemented yet, but whenever I try to tween the ball to wherever the mouse is, it just falls through the ground.

I assume this is because it's not anchored and CanCollide is turned off, but even when I make it anchored, it still does it. I'm trying to anchor it from the script that makes it appear, and I used prints to check if it was for some reason doing it locally, even being in a server script, and the prints printed what I wanted to happen, but the ball just falls.

Server:

-- Replicated Storage
local repStorage = game:GetService("ReplicatedStorage")
local powers = repStorage:WaitForChild("Powers")
local lightningEvents = powers:WaitForChild("Lightning")

local rEvent = lightningEvents:WaitForChild("R")
local tEvent = lightningEvents:WaitForChild("T")
local vEvent = lightningEvents:WaitForChild("V")

-- Events
rEvent.OnServerEvent:Connect(function(player,enabled,mouseCFrame)

    -- Player Stuff
    local char = player.Character
    local rightHand = char:WaitForChild("RightHand")

    -- Meshes
    local lightningBall = script:WaitForChild("Lightning Ball"):Clone()
    local boom1 = script:WaitForChild("Boom1"):Clone()
    local boom2 = script:WaitForChild("Boom2"):Clone()

    if enabled == false then

        -- Setting Positions
        lightningBall.CFrame = rightHand.CFrame + rightHand.CFrame.upVector*-5
        lightningBall.Parent = game.Workspace

        -- Welding
        weld = Instance.new("Weld",rightHand)
        weld.Part0 = rightHand
        weld.Part1 = lightningBall

    elseif enabled == true then

        local tweenService = game.TweenService

        local tweenInfo = TweenInfo.new(
            1,
            Enum.EasingStyle.Linear,
            Enum.EasingDirection.In,
            0,
            false
        )
        local partProperties = {
            CFrame = mouseCFrame
        }

        print(lightningBall.Anchored)
        weld:Destroy() -- Destroys the weld.
        lightningBall.Anchored = true -- Makes the ball anchored . . . supposedly.
        print(lightningBall.Anchored)

        local tween = tweenService:Create(lightningBall,tweenInfo,partProperties)
        tween:Play() -- Is there just something wrong with my tween?

    end


end)

-- Beyond this is just stuff for the other moves, they're still being made.

tEvent.OnServerEvent:Connect(function(player)



end)

vEvent.OnServerEvent:Connect(function(player)



end)

Client:

-- Player Stuff
local player = game.Players.LocalPlayer
local char = player.Character

local humanoid = char:WaitForChild("Humanoid")
local rootPart = char:WaitForChild("HumanoidRootPart")

-- Input
local UIS = game:GetService("UserInputService")
local mouse = player:GetMouse()

-- Replicated Storage
local repStorage = game:GetService("ReplicatedStorage")
local powers = repStorage:WaitForChild("Powers")
local lightningEvents = powers:WaitForChild("Lightning")

local rEvent = lightningEvents:WaitForChild("R")
local tEvent = lightningEvents:WaitForChild("T")
local vEvent = lightningEvents:WaitForChild("V")

-- Stats
local stats = player:WaitForChild("Stats")
local powerStat = stats:WaitForChild("Power")

local power = powerStat:WaitForChild("PowerLevel")

-- Debounces and Cooldowns
local db1 = false
local db2 = false
local db3 = false

local ballCooldown = 10

-- Other
local ballEnabled = false

UIS.InputBegan:Connect(function(input, gameStuff)

    if gameStuff then return end

    if input.KeyCode == Enum.KeyCode.R and db1 == false then

        if ballEnabled == true then

            db1 = true
            rEvent:FireServer(ballEnabled,mouse.Hit)
            wait(ballCooldown)
            ballEnabled = false

        elseif ballEnabled == false then

            rEvent:FireServer(ballEnabled,nil)
            ballEnabled = true

        end

        db1 = false
        -- Once again, the next two moves aren't made yet.
    elseif input.KeyCode == Enum.KeyCode.T and db2 == false and power.Value >= 50 then

        db2 = true

        tEvent:FireServer()

        db2 = false

    elseif input.KeyCode == Enum.KeyCode.V and db3 == false and power.Value >= 100 then

        db3 = true

        vEvent:FireServer()

        db3 = false

    end

end)

I might just be doing the tween wrong, but if you could help, I would greatly appreciate it!

Edit: Sorry, I forgot to post a Gyazo of what happens so you can get a better idea of what happens. https://gyazo.com/188a56c2ec2402093795d1e697a04692