1. Apply Pre-Order On The Products

From your Desk, go to the > Product List section.

Now click on the Deactivated at the Pre-Order bar, which is in front of the product name.

Now select the Activate and click the right checkbox.

2. To Manually Sync

From your Desk, go to the =>Product List section.

Now click on sync Product manually.

Wait for 2-3 minute while syncing.