Oh — it might be because you’re using the App Builder. App Builder doesn’t support BYOK yet, but we’re already working on it, and BYOK will be supported in App Builder soon.
If you use self-hosted, all credit usage will go through your own API key, so it’s no longer related to Teable. For now, you’ll need to configure a v0 API key and use a Vercel account to deploy the built app. If you run into any issues with self-hosting, you can refer to this post.