I used this script and i dont know why dont work to save when "player left and enter again"

local AutoSaveInterval = 15

local datastoreService = game:GetService("DataStoreService")

local experiencestore = datastoreService:GetDataStore("PlayerExperience")

local dataStore = datastoreService:GetDataStore("DailyRewards")

local HourWait = 24

local sessionData = {}

local possibleRewards = {5,5,5,5,5,5,5,5,5,5,5,5,5,10,10,10,10,10,10,10,15,15,15,15,15,500,500}

local myDataStore = datastoreService:GetDataStore("myDataStore")

local playerData = datastoreService:GetDataStore("PlayerData")

game.Players.PlayerAdded:Connect(function(player)
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderStats"
	leaderstats.Parent = player
	
	local cash = Instance.new("IntValue")
	cash.Name = "Emeralds"
	cash.Parent = leaderstats
	
	local time = os.time()
	
	local data
	pcall(function()
		data = dataStore:GetAsync(player.UserId.."-DailyReward")
		print("GettingData")
	end)
	
	
	if data ~= nil then
		--Returning player to game
		local timesinceLastClaim = timenow - data
		
		print("time since last claim"..timesinceLastClaim)
		
		if (timesinceLastClaim / 3600) >= HourWait then
			local reward = possibleRewards[math.random(1,#possibleRewards)]
			game.ReplicatedStorage.ShowDailyReward:FireClient(player,HourWait,reward)
			local connection
			connection = game.ReplicatedStorage.ClaimReward.OnServerEvent:Connect(function(triggeringplayer)
				if triggeringplayer == player then
					print("Reward claimed")
					player.leaderStats.Emeralds.Value = player.leaderStats.Emeralds.Value + reward
					dataStore:SetAsync(player.UserId.."-DailyLogin",os.time())
					connection:Disconnected()
				end
			end)
		else
			print("player is unegible right now")
		end
		
	else
		--New Player
		print("New Player")
		
			local reward = possibleRewards[math.random(1,#possibleRewards)]
			game.ReplicatedStorage.ShowDailyReward:FireClient(player,HourWait,reward)
			local connection
			connection = game.ReplicatedStorage.ClaimReward.OnServerEvent:Connect(function(triggeringplayer)
				if triggeringplayer == player then
					print("Reward claimed")
					player.leaderStats.Emeralds.Value = player.leaderStats.Emeralds.Value + reward
					dataStore:SetAsync(player.UserId.."-DailyLogin",os.time())
					connection:Disconnected()
				end
			end)
	end
	
	local data
	local sucess, errormessage = pcall(function()
		data = myDataStore:GetAsync(player.UserId.."-Cash")
	end)
	
	if sucess then
		cash.Value = data
	else
		print("CANT GET MONEY")
		warn(errormessage)
	end
end)

game.Players.PlayerRemoving:Connect(function(player)
	
	local data
	pcall(function()
		data = dataStore:GetAsync(player.UserId.."-DailyLogin")
		print("GettingData")
	end)
	
	if data == nil then
		local timeValue = os.time()
		dataStore:SetAsync(player.UserId.."-DailyLogin")
	end
	print("Saved Because Your a New Player")
	
	local sucess, errormessage = pcall(function()
		myDataStore:SetAsync(player.UserId.."-cash",player.leaderStats.Emeralds.Value)
	end)
	
	if sucess then
		print("Data sucefully saved")
	else
		print("there's an error saving data")
		warn(errormessage)
	end
	
end)
Anonymous