Downloading your final video/clip is a breeze. After you've burned in your captions, you're taken back to Video Management. Under Video Management, make sure to click on the Videos or Clips tab to select the media file you want to download. Videos will contain all the original videos you uploaded while Clips will show you all the video clips you created from your original videos.
Here you will see your video with a green download button next to it.
This is what it will look like if you're downloading a video or a clip using a desktop:
This is what you'll see if you're downloading a video or a clip using your mobile phone:
Click on that green button and ta-da! Your video will now start downloading on your desktop or mobile phone.