Issue
In Walk-up portal, when any user checks-in the pop-up message that gets displayed after clicking "Check In" button always says "You are Number #1 in the queue" irrespective of the user's position in the queue.
Cause
"walkup_check_in" page might be using custom widget.
Resolution
Modify the "walkup_check_in" page to use OOB widget named "Walk-up Check-In"
Widget URL => https://<INSTANCE-NAME>.service-now.com/sp_widget.do?sys_id=ca7d3c813b3a03001d132c2b54efc4bf