## The problem
Issue zitadel/zitadel#7514 (closed, 20 comments): ### Preflight Checklist

- [X] I could not find a solution in the documentation, the existing issues or discussions
- [X] I have joined the [ZITADEL chat](https://zitadel.com/chat)

### Environment

ZITADEL Cloud

### Version

_No response_

### Database

None

### Database Version

_No response_

### Describe the problem caused by this bug

Hello,

Trying to setup my Zitadel instance to function with an alternative login page for an Organization and am running all via Docker Containers.

The primary domain/Instance is: login.example.com
The organization instance and verified domain is:...

## What fixed it
ZITADEL doesn't support a custom organization login page out of the box yet. The maintainer's two options: build your own login UI, or have your application pass the organization context to ZITADEL by forwarding a scope parameter. If you're setting up domain discovery and hitting 'Instance not found', check whether you actually need a custom login page first, since that's the unsupported part.