McDonald's app showing "Your device did not pass our security check ..."

A client came to fix his phone because it is receiving this message when he opens the recently installed "McDonald's" app: > Your device did not pass our security check. Please check that you run a Google trusted OS version, that the device is not rooted and that you have no harmful apps installed Curiously the phone is not rooted, and is also a modern and updated Samsung phone. What could be the issue? solutions?