You can review all the payments you have made for your Newoldstamp subscription directly under your account.
Here are the steps to take:
Please go to your Account Settings and switch to the Billing settings tab;
Then have a look at the Invoice history section:
You are also welcome to scroll the list of invoices if there are more than 5 recordings.
Also, you can preview every invoice from the list by clicking on Invoice in the Invoice file section.
Feel free to reach us at email@example.com in case you need any assistance or clarification with the payments submitted for Newoldstamp.