Just started using the Mobile App Scanner. After about 100 issues I have to say it's a bit infuriating. The lag between + scan feedback (buzz) and the info coming up is horribly inconsistent, that's if it comes up at all. I've had to scan nearly every barcode numerous times before any info would come up. Then there is the lag for the ADD button to show up, about 5-10 seconds after the issue info. And I'm fairly certain it is not my iPhone 12 or my internet connection since everything else is almost instant.
