I have experienced same issue, didn't found a fix so far. Also, it seems like there is no issue opened about that on GitHub.
The error may be related to Android version. I've gotten a new phone today, and it seems image downloading works fine there. Previous version was Android 9, now I'm on Android 13.
Questions 12 and 20 seem to have incorrect answers. The correct answer is "no", but the comment says they were created by DALLE-3