All of HubSpot's certification tests are timed, and the timer starts as soon as you view the first page of questions. Chances are, you started the test at a previous time, but closed out of it before finishing. The test timer keeps running whether you still have the test window open or not, and the system can't send notifications of expired time while you're not logged in. Thus, you'll receive notification of not passing the exam upon returning to the page. The test will unlock itself 48 hours after you received the notification that your time expired.