WP Migrate DB Pro will only migrate your media files if you are using the Media Files addon. Otherwise, you’ll need to use FTP, SCP, git, rsync, or similar to migrate your site files between WordPress installations.
If you’ve already migrated your images and they’re still not appearing there might be a problem with the image URLs. Inspect the HTML and ensure that the image’s source is pointed to the correct URL.
If the URL is incorrect there might have been a problem during the migration or with the default find and replace fields. See the Find & Replace Fields doc for more information.