Thanks a lot for the feedback. You are right, “All levels” mixed in words from every level which is how Abfindung turned up so early. We’ve changed it. New words now start with everyday A1–A2 vocabulary and step up gradually as you learn, with a few slightly harder ones mixed in. You can still choose exact levels under Settings → Levels, on the All words page, and in most of the games.
About the example sentences: fair point. Some of them are more complex than the word they’re meant to teach, and a few vice versa. We’re working through them, starting with the beginner words. If one stands out as off, send it our way and it goes to the top of the list. Thanks for trying it!