When creating a thread, ensure that you keep it updated with feedback to replies made. If an answer is given to your thread and you do not reply within 48 hours it will be archived regardless of whether that specific answer actually helped. It is your responsibility to keep your thread updated on the status of your issue/question.
Please understand that this is to reduce the amount of spam and clutter that has been caused by 'abandoned' threads. Thank you for understanding and good luck with your threads.