Installed onEdit trigger does not - google-apps-script

Question

I have a function that is intended to detect changes in one spreadsheet and copy them into another spreadsheet in the same exact cell location if the change is made in sheet1. I first tried to do this using the installed onEdit(e) function provided by sheetsAPI, but kept running into the error that I'm not authorized to open a new spreadsheet from a built-in function. I tried setting up my own trigger, but it won't activate even though I assigned an OnEdit trigger to the function.
function ChangeDetect(e){
var range = e.range
var esheet = SpreadsheetApp.getActiveSheet()
var ss = SpreadsheetApp.getActiveSpreadsheet()
var sheet = ss.getSheets()[1];
// literally, if the edit was made in the first sheet of the spreadsheet, do the following:
if (esheet.getIndex() == ss.getSheets()[0].getIndex()){
var numrows = range.getNumRows();
var numcols = range.getNumColumns();
for (var i = 1; i <= numrows; i++) {
for (var j = 1; j <= numcols; j++) {
var currentValue = range.getCell(i,j).getValue();
var cellRow = range.getCell(i,j).getRow();
var cellCol = range.getCell(i,j).getColumn();
var ss3 = SpreadsheetApp.openByUrl('https://docs.google.com/spreadsheets/d/1K2ifzjPTATH77tV4xInh0Ga2SuPsLdgNRSbekjDx-w8/edit#gid=0')
var sheet3 = ss3.getSheets()[0];
sheet3.getRange(cellRow,cellCol).setValue(currentValue)
}
}
}
}

Answer 1

I think you may be experiencing the limitation/restrictions of installable triggers:
Restrictions
Because simple triggers fire automatically, without asking the user for authorization, they are subject to several restrictions:
The script must be bound to a Google Sheets, Docs, or Forms file.
They do not run if a file is opened in read-only (view or comment) mode.
They cannot access services that require authorization. For example, a simple trigger cannot send an email because the Gmail service requires authorization, but a simple trigger can translate a phrase with the -
Language service, which is anonymous.
They can modify the file they are bound to, but cannot access other files because that would require authorization.
They may or may not be able to determine the identity of the current user, depending on a complex set of security restrictions.
They cannot run for longer than 30 seconds.
In certain circumstances, add-ons for Google Sheets, Docs, and Forms run - their onOpen(e) and onEdit(e) simple triggers in a no-authorization mode that presents some additional complications. For more information, see the guide to the add-on authorization lifecycle.
These restrictions do not apply to doGet() or doPost().