File save for shop

Okay so I have this program I wrote to save a persistent file so It survives restart ther is a password to change the shop name it sends the data to the server the server dispalys the shop number and name the numbers are hardcodded
When I start the program in the shop it displays the text for both of the challenges and then quits.

function check()
  if not fs.exists("Name") then
    local file = io.open("Name", "w")
    file:write(PName)
    file:close()
  end
end

function save()
  local file = io.open("Name", "w")
  file:write("PName")
  file:close()
end

function read()
  local file = io.open("Name", "r")
  PName = file:read()
  file:close()
end



function send()
  rednet.open("bottom")
  rednet.send(73,PName)
  rednet.close("bottom")
end

  
local PName = ""
local Pass = "da5655"
local Input = ""

check()
read()
send()
while true do
  term.clear()
  term.setCursorPos(1,1)
  term.write("Enter the Password to change the name.")
  Input = read("*")
  if Input == Pass then
    term.clear()
    term.setCursorPos(1,1)
    term.write("Enter the name of your store.")
    PName = read()
    save()
  else
    term.write("Wrong Password")
    sleep(3)
    os.reboot()
  end
end

try saving the file in a directory that starts with a period, as this hides it from 'ls'
also save the file in that directory with a period as well.

move your local definitions to the top, and remove the qoutes around pname in the save function.

I did that except it still displays Enter the Password to change the name.Enter the name of your store. on the same line and then quits.

local PName = ""
local Pass = "da5655"
local Input = ""
function check()
  if not fs.exists("Name") then
    local file = io.open("Name", "w")
    file:write(PName)
    file:close()
  end
end
function save()
  local file = io.open("Name", "w")
  file:write(PName)
  file:close()
end
function read()
  local file = io.open("Name", "r")
  PName = file:read()
  file:close()
end
function send()
  rednet.open("bottom")
  rednet.send(73,PName)
  rednet.close("bottom")
end

check()
read()
send()
while true do
  term.clear()
  term.setCursorPos(1,1)
  term.write("Enter the Password to change the name.")
  Input = read("*")
  if Input == Pass then
    term.clear()
    term.setCursorPos(1,1)
    term.write("Enter the name of your store.")
    PName = read()
    save()
  else
    term.write("Wrong Password")
    sleep(3)
    os.reboot()
  end
end

You overwrote the global read function with your own.

function read()

just change the name

Some other guy wrote the receiving code here it is I am not quite sure how to get it to auto refresh.

monitor= peripheral.wrap("top")
monitor.clear()
monitor.setCursorPos(2, 2)
monitor.setTextScale(2)
rednet.open ("left")
while true do
  event, id, text = os.pullEvent()
  shopID = id
  if shopID == 56 then
    id = 101
  elseif shopID == 57 then
    id = 102
  elseif shopID == 58 then
    id = 103
  elseif shopID == 59 then
    id = 104
  elseif shopID == 60 then
    id = 105
  elseif shopID == 61 then
    id = 106 
  elseif shopID == 19 then
    id = 107   
  elseif shopID == 18 then
    id = 108
  elseif shopID == 17 then
    id = 109
  elseif shopID == 16 then
    id = 110
  elseif shopID == 15 then
    id = 111
  elseif shopID == 14 then
    id = 112
  end
  if event == "rednet_message" then
    if id == 101 then
	  monitor.setCursorPos(2, 2)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 102 then
	  monitor.setCursorPos(2, 3)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 103 then
	  monitor.setCursorPos(2, 4)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 104 then
	  monitor.setCursorPos(2, 5)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 105 then
	  monitor.setCursorPos(2, 6)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 106 then
	  monitor.setCursorPos(2, 7)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 107 then
	  monitor.setCursorPos(2, 8)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 108 then
	  monitor.setCursorPos(2, 9)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 109 then
	  monitor.setCursorPos(2, 10)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 110 then
	  monitor.setCursorPos(2, 11)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 111 then
	  monitor.setCursorPos(2, 12)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    elseif id == 112 then
	  monitor.setCursorPos(2, 13)
	  monitor.clearLine()
	  monitor.write(id .. "- " .. text)
    end
  end
end