So far I’ve found this one, and the same link but with the following numbers instead: 1461152, 1427329, and 1179936.
Why are there so many, how are they different, and is there a way to migrate data from older version to latest versions. (I kept accidentally starting new ones before I realised today I was studying more than one of the same course.
I’ve also found the same thing for the Mandarin Chinese 2 and 3 courses.