Why do my videos still say SHOTSTACK on them, and why aren't my credits being used?

It’s likely that the issue stems from the use of the sandbox stage URL: POST https://api.shotstack.io/edit/stage/render. Instead, your request should be sent to the production v1 URL: POST https://api.shotstack.io/edit/v1/render. Switching to the correct production URL should resolve the problem if you're trying to publish live content.