Burger King's app has always sucked. They refuse to fix it. McDonald's works better because they have better quality IT than BK. Don't go to BK anymore, boycott them until they fix their app.
I'd rather take my chances with an app that's accidentally broken a lot than support one that's intentionally hostile to me. The McDonald's app tries to detect if your phone is rooted, and refuses to work at all if it is.
Like, they get an internal or external pentest (maybe as part of PCI), consultant has finding "hey best practice is block root / add obfusc / etc", ticket enters backlog, dev shrugs "I guess the experts are telling me to..."
That's normally how it happens.