Why is my DataStore2 not saving or changing values?

I have this field of view slider that changes the cameras field of view, and I am trying to get it to save the field of view sliders position. It was working fine with normal DataStore but doesn't seem to be working with DataStore2.

I followed this AlvinBlox tutorial https://www.youtube.com/watch?time_continue=4&v=hBfMfB0BwGA&feature=emb_logo

This is the data store 2 code:

local SeverScriptService = game:GetService("ServerScriptService")
local DataStore2 = require(SeverScriptService:WaitForChild("DataStore2"))	
local DefaultValue = 0.771



local ReplicatedStorage = game:GetService("ReplicatedStorage")
local remoteEvent = ReplicatedStorage:WaitForChild("GuiPositionSave")

game.Players.PlayerAdded:Connect(function(Plr)
	local FOVStore = DataStore2("FOVSave", Plr)
	--Folder
	local SettingsSaveFolder = Instance.new("Folder", Plr)
	SettingsSaveFolder.Name = "SettingsData"
	
	--FOV
	local FieldOfView = Instance.new("NumberValue", SettingsSaveFolder)
	FieldOfView.Name = "FovValue"
	
	local function pointsUpdate(updatedValue)
		FieldOfView.Value = FOVStore:Get(updatedValue)
		
	end
	pointsUpdate(DefaultValue)
	
	FOVStore:OnUpdate(pointsUpdate)
end)

local function GuiChangerPos(player, GuiPos)
	local FOVStore = DataStore2("FovSave", player)
		FOVStore:Increment(GuiPos,DefaultValue)

-------------------LINES THAT HAVE BEEN COMMENTED OUT---------------------------------------------
	--local FovVal = player:FindFirstChild("SettingsData").FovValue
         --FovVal.Value = GuiPos    ---IF I ENABLE THESE LINES THE VALUE CHANGES WHEN I DRAG THE SLIDER
end

local function ResetSliderToDefaultPosition(player, GuiPos)
	local FOVStore = DataStore2("FovSave", player)
       FOVStore:Increment(GuiPos,DefaultValue)   -

-------------------LINES THAT HAVE BEEN COMMENTED OUT---------------------------------------------
	--local FovVal = player:FindFirstChild("SettingsData").FovValue
	--FovVal.Value = GuiPos   ---IF I ENABLE THESE LINES THE VALUE CHANGES WHEN I CLICK A BUTTON, WHICH CHANGES THE VALUE BACK THE DEFAULT FOV

	
end


game.ReplicatedStorage.FOVval.OnServerEvent:Connect(GuiChangerPos)

game.ReplicatedStorage.FOVval2.OnServerEvent:Connect(ResetSliderToDefaultPosition)

this is the local slider script

local sliderBG = script.Parent

local slider = sliderBG:WaitForChild("Slider")
--local sliderBox = sliderBG:WaitForChild("SliderInput")
local uis = game:GetService("UserInputService")
local Rus = game:GetService("RunService")
local player = game.Players.LocalPlayer
local SettingsStats = player:WaitForChild("SettingsData")
local FovVal = SettingsStats:WaitForChild("FovValue")
local Slider = script.Parent.Slider
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RepRemote = ReplicatedStorage:WaitForChild("FOVval")

--Variables
local function PlayersAdded()
		Slider.Position = UDim2.new(FovVal.Value,0,-4,0)
end




FovVal.Changed:Connect(function() --If value changes
	if Slider then
		Slider.Position = UDim2.new(FovVal.Value,0,-4,0)
	end
end)

local noofstops = 120

local buttonHold = false
local percentage = 0

--actual code 
local stops = 1/noofstops
--local stops = 0.01

function dowork(number, value)
	if value == 1 then
		return number
		
	else
		return math.floor(number/value+.5)*value
	end
	
end


																																		
uis.InputEnded:Connect(function(key, processed)
	if key.UserInputType == Enum.UserInputType.MouseButton1 then
		buttonHold = false
	end
	
end)

script.Parent.Slider.TextButton.MouseButton1Down:Connect(function()
	buttonHold = true
end)

Rus.RenderStepped:Connect(function(alpha)
	if buttonHold then
		game.ReplicatedStorage.FOVval:FireServer(script.Parent.Slider.Position.X.Scale) ----EVENT FIRES IF BUTTON HOLD = TRUE. Also sends over the Sliders X position

		local FovData = player:WaitForChild("SettingsData")
		local FovValue = FovData:WaitForChild("FovValue")
		local mouseLocation = uis:GetMouseLocation().X
		local buttonPosition = slider.Position
		local SliderSize = sliderBG.AbsoluteSize.X
		local sliderPosition = sliderBG.AbsolutePosition.X
		local position = dowork((mouseLocation-sliderPosition)/SliderSize, stops)
		percentage = math.clamp(position,0,1)
		slider.Position = UDim2.new(percentage,0,buttonPosition.Y.Scale, buttonPosition.Y.Offset)
	end
end)


game.Players.PlayerAdded:Connect(PlayersAdded)
for _, player in ipairs(game.Players:GetPlayers()) do
	PlayersAdded(player)
end

What should Happen here is that that when I drag the slider button it fires a remote event, it should update the the value, but thats just not happening, unless I enable the lines that have been commented out in the data store script. It’s also not saving even though in the output in says it has saved the data. Like when I join the value just resets back to the default FOV

What am I doing wrong? Does DataStore2 not work in studio, even though I have the boolvalue in ServerStorage named “SaveInStudio” set to true.
Help would be much appreciated thanks.