Your account
Paid for a printer on another device? The confirmation and a link to the order are in your e-mail.
Without an account you can record your first five sales free; for more you need credit or a subscription, which are bought on an account. The account signs you in to the app, and here on the website you top up credit or buy a subscription. When you are signed in, the app also keeps a copy of your sales and receipts with your account — for restoring them on a new phone, for your team, for your accountant’s access and for export here on the website. Your price list and customer address book stay on the phone only. So does the certificate, unless you save it to your account yourself or your accountant uploads it there.