Check these conditions in order:
- The list is open. Open it from the location dashboard.
- The current time is allowed. Compare the list and location working hours with the location's time zone.
- The public feature is enabled. Confirm QR page or Kiosk is turned on for that location.
- The form is valid. Complete every required field and correct invalid phone or email details.
- Join rules are satisfied. Check any distance, service, party-size, or capacity restrictions configured for the list.
- The customer opened the current link. Replace old printed codes or saved links when the public destination changed.
Test in a private browser window. If staff can add a walk-in but the public form still fails, record the exact message, time, list, and device before contacting support.