Hi
There is serveral way for you to prove that you purchased the extension :
1. Give me a list of possible email address you are using. I will check every emails to see whether there is an order record in our system .
2. Give me Paypal Transaction ID of your purchase .
3. Forward me the email which we sent to you when you purchased the extension. The email should come from contact@joomservices.com or contact@joomdonation.com
Thanks,
Tuan