Why is This Filter Script Only Returning "Instance"?

I have a script to filter the text inputted by a player in a textbox.

Localscript

script.Parent.Parent.NameBox.FocusLost:connect(function(enterPressed)
   -- if enterPressed then
		if script.Parent.Parent.NameBox.Text ~= "" then
       	 filter:FireServer(game.Players.LocalPlayer, script.Parent.Parent.NameBox.Text)
		end
   -- end
end)

function onSwap(filteredtext)
	script.Parent.Parent.NameBox.Text = filteredtext
end
 
filter.OnClientEvent:Connect(onSwap)

Regular Script

local RS = game:GetService("ReplicatedStorage")
local filter = RS.Filter
local TextService = game:GetService("TextService")


local function getTextObject(message, fromPlayerId)
	local textObject
	local success, errorMessage = pcall(function()
		textObject = TextService:FilterStringAsync(message, fromPlayerId)
	end)
	if success then
		return textObject
	elseif errorMessage then
		print("Error generating TextFilterResult:", errorMessage)
	end
	return false
end
 
local function getFilteredMessage(textObject)
	local filteredMessage
	local success, errorMessage = pcall(function()
		filteredMessage = textObject:GetNonChatStringForBroadcastAsync()
	end)
	if success then
		return filteredMessage
	elseif errorMessage then
		print("Error filtering message:", errorMessage)
	end
	return false
end
 
function onSwtap(player, text)
	local messageObject = getTextObject(text, player.UserId)
	local filteredText = getFilteredMessage(messageObject)
	filter:FireClient(player, filteredText)
end

filter.OnServerEvent:Connect(onSwtap)

However, instead of returning a filtered name, it returns "Instance"