How do I get a copy of a reciept for my premium purchase?
I do not have a pay pal account
If you've paid through the web-app using the "Don't have a PayPal account" option, PayPal should still send you the receipt to the email address you've used in the registration form. If you've paid through the Google PlayStore, they should have send you a receipt upon purchase and in case of the iOS payment, you will get a receipt from Apple shortly thereafter.
Please try to contact the appropriate vendor (PayPal, Google, Apple) if you need another receipt for the payment.