Correct marked incorrect

When I take a test or quiz and get a fill-in-the-blank question, I sometimes enter the correct answer, but LIngQ marks it wrong. (see picture).
For example, when asked the meaning of “desayuno”, I entered “breakfast” and it said that was wrong.
Anyone know why this is happening?

What test is it? If it’s a multiple choice text, in that case you need to select correct translation for a word.
If it’s a dictation test, you then need to type a word you are learning, not the translation.