I have two users who can't pull up a specific card on their iPhone using the QR code.

[Michelle Perry]

Two out of our 7 users have started having trouble pulling up a specific card using the camera app on the iPhone to scan the Trello QR code. When we scan the QR code, our phone takes us to Trello, but it opens the card that was previously viewed on that phone. Both iphone users have tried clearing the cache and uninstalling/reinstalling the Trello app.

[Luciana Munhoz]

Hi Michelle, welcome to the community!
I see they are running into a known issue, which you can check in the bug report here: https://jira.atlassian.com/browse/TRELLO-1604

The bug it's already on "waiting for release" status. You can click on the "Start watching this issue" to get updates via email.