This is the typical case for Registration with additional information: the buyer pays, the attendee receives an e-mail with a link to fill in their details, and the attendee deletes or loses that e-mail. The registration stays unfinished and the PDF ticket with the QR code is not generated.
Open Orders — from the Tools dropdown at the bottom of the left menu, from the tile on the event Overview, or with the button in the top right of the Tickets page. Find the order by the buyer's name, e-mail, or company. The faster route is the Unregistered chip, which narrows the list to orders where registration never finished.
In Orders expand the specific order with the arrow at the end of its row.
If the wrong e-mail was entered for the ticket, fix it with the pencil icon in the Tickets table.
For a ticket without a finished registration, use the Notify button. The attendee receives a new e-mail with the link to finish registration.
Above the order list on the right there is a Notify by e-mail dropdown that reaches the whole group at once. It is useful when:
a few days before the event you spot a gap between sold and registered,
after a bulk ticket purchase (a company buys 50 tickets and the employees register one by one).
Automatic reminders to attendees with an incomplete registration are not part of self-service today — bulk resend is a manual step worth scheduling.
On event day (ideally an hour before start), send an E-mail campaign with a reminder and the QR ticket — the attendee then has the ticket in the most recent e-mail, no matter what they did with the previous one.
For Registration with additional information, set a clear message to the buyer that registration is not yet complete — both on the post-purchase screen and in the confirmation e-mail.
In the order you fix the data on a specific ticket — typically the typo in the e-mail address that kept the link from arriving. Registration form answers, groups, and attendance status are managed in the Registration section: the order is about the purchase, the registration about the attendee.
If the buyer did not enter the attendee e-mails, the links go to the buyer and the buyer forwards them. A bulk Notify by e-mail in this case only re-reaches the buyer, not the end attendees.