A newly posted pre market listing is active for 60 days and it cannot be extended beyond the auto-expiration date unless it is marked as sold. Pre-market listings only listings auto expire after 60 days and will be automatically removed public view.
In addition, in-platform notifications will remind you to update your pre-market/coming soon listings. Click on the bell icon located to the right of the top navigation bar to see a drop down menu of all your recent notifications.
You will also receive an email notification 72 hours before the listing expires. You will also receive an email notification the day your listing expires.