Why are my answers marked as incorrect even if they are correct?
There are occasional issues that are apparently caused by the browser. As far as we know, all such problems have gone away on their own or by restarting your browser.
The official grading system is independent of the scores displayed in your browser, so even if you encounter these problems, they will not affect your official results.
If the problem persists, please send the admins a private message on Spectrum. Please note: Avoid sharing screenshots of your answers in public in order to avoid revealing the correct answers to other students.