I had no issues (other than having to attempt the app download multiple times) in completing all lessons in the app. The issue came when I checked my time card and it didn't show the completion. I went into Success Factors on my computer via Deltanet and it had one lesson remaining which wasn't in the app. It was called Final Lesson (or something similar). It was literally one slide saying my QCQ was now complete. My time card was correct a few minutes later.