>or the access code
Are you saying that you did not keep a copy of your serial number in a safe place?
Log-in to your Adobe account and click this link https://account.adobe.com/products to see if you registered your serial number
IF/When you do have a download, be sure to copy it to AT LEAST one external device
-since Adobe does sometimes remove old versions from the server
-a usb flash drive or external hard drive, or write to a DVD
-plus a text file containing your serial number