AnswerWhat to do
Green — validLet them in. Free seating means there is no seat, only the stand
Already scannedA copy or the same person twice — the line underneath says when, where and by whom
Does not belong to the selected eventCheck the date; the line names the event it is for
Does not match the selected entranceSend them to their own gate
Check-in has been stoppedDo not let in — the office knows why
StornatedCancelled and refunded — do not let in
Order not paid yetA bank transfer still waiting — do not let in
Does not exist in the systemA test print, a screenshot of something else or a fake

Every scan, including refusals, is written down with gate and time. Read them in Settings → Used Tickets, where a button switches to the refused scans with their reasons.

Somebody was scanned by mistake?

The office can unscan the ticket from the order. Ring them rather than letting a second person in on the same code.

The browser never asked for the camera?

The permission was refused earlier. Allow the camera for the site in the browser settings and reload.