Make sure the hook is going all the way down. Some clasps will only close completely in one direction. In other words, take out the hook, turn it 180 and...
It was probably set by the previous owners. Either try to contact them or keep spamming the "I forgot my password" button, and then a master key will pop up....
I recommend talking to a mental health professional about this. Sometimes even talking to a therapist can help you develop some social skills and relaxation techniques when you get nervous...
