MuseClass funktioniert nicht

The diese App student mobile app paired together with the diese App teacher web app streamlines the way music teachers create, distribute, and grade music assignments. diese App' assessment technology is not only compatible with all of the printed and digital lesson materials teachers already have but it also works seamlessly with the various assessment methods that teachers are already using. diese App provides a single, intuitive tool to assess every students’ performance.  When learning a new piece of music and recording their assignment, students can record as many attempts as they like and choose the version they like the most, and can submit it safely and securely to their teacher directly from their mobile device. diese App only requires an Internet connection to receive and submit completed music assignments.  When printed music is distributed and assigned, students can create and turn-in video or audio recordings using the diese App app. diese App includes a built-in tuner and metronome, which helps students tune their instruments and play in time.  Whether educators assign printed or digital sheet music, or if they are grading video, audio, in-person, worksheet, or non-performance assignments, diese App speeds up and simplifies the grading process.  Internet service is not required for students to learn, practice, or record their assignments.