I just had a bad experience too, same issue with scanning a passport a few days ago and having to verify again. App says I'm checked in (verified in app flight status page) but unable to get my boarding pass and no message or email saying go to counter (super weird to not even have that) to get them. Not sure what is up. Thinking maybe SSSS but the app says I am still TSA Pre eligible which I thought was taken away if you get on SSSS.

Sorry to hijack the thread but just sharing that I've had some issues with the app for intl check in too.