Script won't run on demo

Set after MessageBox function RefreshRates() and recalculate StopLoss.

no, still nothing.

//+------------------------------------------------------------------+
//|                                       Lot amount based on SL.mq4 |
//|                      Copyright © 2009, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2009, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"

//#property show_inputs
#include <WinUser32.mqh>
#include <stderror.mqh>
#include <stdlib.mqh>

double InputtedStopLoss=50;
double InputtedRisk=1.5;
double InputtedAccountCapital= 0;
double StopLoss = 0.00000;
double Lot = 0.00;

void logError(string functionName, string msg, int errorCode = -1)
  {
    Print("ERROR: in " + functionName + "()");
    Print("ERROR: " + msg );
    
    int err = GetLastError();
    if(errorCode != -1) 
        err = errorCode;
        
    if(err != ERR_NO_ERROR) 
      {
        Print("ERROR: code=" + err + " - " + ErrorDescription( err ));
      }    
  }

//+------------------------------------------------------------------+
//| script program start function                                    |
//+------------------------------------------------------------------+
int start()
  {
//----
   
   double Answer = 0;
   string text = "";
   int nDigits;
   int nMultiply;
   
   InputtedAccountCapital = AccountBalance()+2000; //hardcoded £2000 extra
   if(Symbol()=="GBPJPY" || Symbol()=="EURJPY" || Symbol()=="USDJPY" || Symbol()=="GOLD")  {nDigits = 3;nMultiply=100;}
   else {nDigits = 5;nMultiply=10000;}
   InputtedStopLoss = iATR(NULL,0,14,0) * nMultiply; //ATR
   StopLoss = NormalizeDouble((Ask-iATR(NULL,0,14,0)),5);
   Lot = NormalizeDouble(((InputtedAccountCapital * (InputtedRisk/100)) / InputtedStopLoss) / 10,2);
   
   if(MessageBox("Do you really want to BUY "+Lot+" "+Symbol()+" at "+Ask+" ask price with stop loss "+StopLoss+ "?",
                 "Script",MB_YESNO|MB_ICONQUESTION)!=IDYES) return(1);
//----
   Print ("Sending");
   RefreshRates();
   StopLoss = NormalizeDouble((Ask-iATR(NULL,0,14,0)),5);
   int ticket=OrderSend(Symbol(),OP_BUY,Lot,Ask,3,StopLoss,0.00000,"My order",0,0,Green);
     if(ticket<0)
       {
        logError("OrderSend BUY failed with error #", "Error");
       }
//----
   OrderPrint();
   return(0);
  }
//+------------------------------------------------------------------+

Your Dealer is probably closed for the weekend.

Maybe, I'll try later but it doesn't put this in the journal either:

Print ("Sending");

No, the broker is running now on demo but nothing works.

Oh, apparently it's an invalid amount on my demo system.

I need to get a demo account from my current live trader with 5 decimals and micro accounts and try that.