This challenge has a bit misleading expected entry:
The answer expects four characters, now to elaborate, I will be using wrong encoding answer. If the answer was UTF-32 we are expected to enter in the text field UTF32 without “-” while this might be valid to form, it is not correct and people will get confused.
For the challenge next in line
we are asked about questions contained in d.ps1 but the code on right side is from first challenge and there is no reference to anything like d.ps1. Unless I am missing something, they copied wrong code from 1st challenge spiny shell