Your Spotlightr storage is being used each time you upload videos directly to your Spotlightr account. You can always check your storage status on the right side in your "My Videos" Dashboard:
You can also purchase additional storage from this page, if you click on Buy Storage link it will take you to the check-out page. Here you can increase and decrease the amount of storage you need:
First click on the icon next to your current storage amount, and then drag the dial:
If you need 400 GB more you would now see this showing you that you are adding 400 GB on top of what is included with your subscription
If you are interested to know how much storage space is consumed by your video, please refer to the article "How do you calculate storage?".
If you are concerned with storage capacities, we recommend you find out more about Hybrid Hosting.