Please send the receipt for my subscription payment

I am not sure if I have understood your question correctly. Do you mean to say that you want the invoice for the subscription payment?

You can check the invoices from your account billing page. Please take a look at the following guide on how to check your invoices:  https://www.jotform.com/help/329-How-to-Check-Invoices 

Please click on the following URL to download your latest invoice:  https://www.jotform.com/invoice?u=Kangs&id=2017-10-03_03:01:20