Downloaded the app today to try it out. I'm using 2.1.58 which was released 2 months ago on a brand new iPad Air (M1) running 15.4.1. The Guitar Fundamentals section shows both the new course with Anders and the old course with Lisa.

However, if I select the new course, I get an alert: "The media cannot be used on this device". The old course works fine, but the Anders won't play at all.

Any suggestions?