Board Thread:Love Live! School Idol Festival Lounge/@comment-28155203-20160408005814/@comment-24187738-20160408055810

The picture is saying exactly what you said, this app now needs iOS 7.0 or above, please update your phone if you want to continue playing, contact them if you have any issues.

The email draft, that section at the start is just "Customer Information" with Identification Code and Device Model.

The words you're probably looking for "今使っている端末がiOS 7.0にアップデイトできませんので、引き継ぎパスワードを欲しいです. " which means the device I'm using now can't update to iOS 7.0, so I would like a transfer password.