Invoices are not sent automatically as described in confirmation emails.
Thank you for this feedback. We are aware of this issue and are currently working on it. We are very sorry for any inconvenience this may have caused. In the meantime, if you need to receive your invoice quickly, you can write directly to our accounting department at firstname.lastname@example.org and they will send your invoice promptly. Thank you for your patience, this issue should be solved very soon.