Idea: QR scanner not working when a hostname does not contain "http" or "https". This is a good idea. But, it should also work when "HTTP" and "HTTPS". Because, some QRs are generated with "HTTP" and "HTTPS".
I'll never understand why an apparent link to the app is NOT included on the page you review it!!! I spent hours trying to find a QR Scanner. Mozillas Scanner sends me big as day Ads, while it omits or hids the actual link!