There are more and more questions on the Cortexio site Hypocampus and it’s not easy to answer everything during a single question session. Now it’s possible to resume the most recent question session and continue where you left off. You can find the previous session by clicking Previous session in the upper left of the question selector.
You will then see the last session and what results you had: right, wrong and unanswered. Click Continue and you will get to your last answered question at the previous question session.