Good evening Errol and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We are sorry to hear about the struggles you have encountered while testing the QR code check-in process. I would love to help you with this topic.
As a first troubleshooting step, could you please provide us with your complete system information in a private reply using the instructions found in the following link?
https://theeventscalendar.com/knowledgebase/sharing-sys-info/
What is the problem?
For the check-in to occur, you must be logged as an administrator (or at least a WordPress role that has the “edit post” capacity) on the same browser used by the app prior to scanning the QR code.
Let me know how that goes.
Best regards,
Geoff B.