Group Item Not Loading For Some Players?

Players have been giving reports on bugs like their omega drink (group item). They've said that it doesn't show up in their inventory once they rejoin the game after joining the group. And for some players, they've told me that it's in their inventory. I'd just like an explanation and solution as to why it doesn't load for some players.

local item = game.ReplicatedStorage.Items:FindFirstChild("omega energy drink")
game.Players.PlayerAdded:Connect(function(plr)
	if plr:IsInGroup(4292399) then
		local bag = plr:WaitForChild("Backpack")
		item:Clone().Parent = bag
		item:Clone().Parent = plr.StarterGear
	end
end)