If you made your purchase through Amazon .Com, you will need to get a copy of your receipt through your Amazon account.
To do that, open up the Amazon dot com web page, log into your account and click on the orders link on the top of the page. Locate your VidaCura order from among a list of all of your orders. In small blue letters, you will see the word invoice. Click on that. When your invoice opens, you will see a link at the top a page that says “print this page for your records”. Click on that link to print your invoice.