Why has my dynamic QR code stopped working?
A dynamic QR code can stop working because the redirect is disabled, the final destination is unavailable, the account or plan no longer keeps it active, or the printed QR has simply become difficult to scan.
Explanation
First separate two different failures: the phone cannot recognise the QR pattern, or it recognises the code but the page does not open.
The QR does not scan
Check size, contrast, sharpness, quiet zone, reflections, distortion and whether a logo covers too much of the code.
The QR scans but the link fails
Test the short URL first, then the final destination. The QR may be disabled, scheduled to end, affected by account rules or pointing to a deleted page.
With a dynamic QR code, if the redirect itself is still active, a broken destination can often be replaced without reprinting the physical material.
Concrete example
The phone reads the QR code correctly but displays a 404 after the redirect. The QR pattern is fine; the final destination needs to be fixed or replaced.
Common mistake
Do not immediately generate a new QR code. First identify whether the problem is the printed pattern, the short URL or the final destination.
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