German: Present 3, lesson 3 of 7 "We serve him"
There is a flaw in the lesson. Could not get passed the "we serve him" translation. Duo suggests two solutions: "Wir dienen ihm" and "Wir unterstutzen ihn", but Duo rejects its even after suggesting it. Got stuck between these two screens and had to quit the lesson Fortunately the desktop version does not have this flaw.