You can always find your receipts for your subscription purchase as a home seeker under the tab subscription. Firstly, you start by logging in to your account, and then you click on your profile picture in the top right corner. Then you choose the tab 'Subscription', and there you will find all the receipts for you subscription.
Here you will find an overview of all your payments and can press 'Show receipt' to the right of the payment you want to see the receipt of.
The receipt will open in a new window and from there you can save it to PDF or print it.