Correct answers graded as incorrect

The following issues/questions were brought up by a faculty member regarding flashcards:

• One student could do the flashcard activity only once despite that it was set as unlimited attempts.
• Correct answers were graded as incorrect (see pics below).
• One student reported that their assignments were graded and pushed to gradebook as zeros even after the faculty gave them a second chance as if the student had never done that assignment. When issues like this happen again, to whom shall the faculty refer the student.