You can set your billing details in the Dashboard using the button Change details.
Use the Description field to add any needed details (address, company ID, VAT ID, etc). These new details will be automatically added to every new invoice (receipt).
If you are looking for a way to add billing details to an already issued invoice, you will have to contact us.
We are automatically issuing an invoice for every payment. Your invoice is sent to the email set on your Organization account, which you can change anytime. You can also manually download invoices from Dashboard/Payments tab.