Hello Everyone,

I'm experiencing a critical issue with my Databricks App deployment. The app is running successfully but completely inaccessible via all access methods due to OAuth authentication failures.

## Issue Summary

I have created the Databricks App in my Databricks free tier platform , has been successfully deployed and is showing **RUNNING** status with **SUCCEEDED** deployment, but the app URL is **completely inaccessible** via all access methods. The app returns "App Not Available" error despite:

- App Status: RUNNING
- Compute Status: ACTIVE
- Deployment Status: SUCCEEDED
- Streamlit logs confirm successful startup
- Permissions configured (All workspace users - CAN_USE)
- API scopes configured (SQL, Unity Catalog, Genie, Workspace)

Please let me know  why the Databricks App cannot be accessed despite successful deployment and proper configuration. We need:

1. **Root cause identification** for the OAuth/authentication failure
2. **Steps to resolve** the access issue
3. **Confirmation** of whether Apps are supported on this Free workspace tier 
4. **Admin assistance** if workspace-level configuration changes are required