371035 paypal IPN delivery script

i have a paypal digital delivery script, but i have not use it for years and it is not working with my recent test on ebay sale. the script is [login to view URL], and i own a reseller license of it. i need a quick fix to ensure the script working to send product link to paid customer, it should work with my ebay sales (it previously work on 2005, i dont know what is wrong now, as i have move to few servers these years) script location: [login to view URL] as i am the licensed reseller of this script, i need help in pack the script for sale. only EXPERIENCE IPN please.