Hey @eorrego
Astro CLI is for local development only, and you need to be on the server/VM to be able to connect to the Airflow UI. Astro CLI uses the Local executor which is suitable to dev/testing purposes.
For testing, you can also refer to this solution.
Or you can start a free trial version on Astro that allows you to access Airflow from the cloud and even chose between Celery vs Kubernetes Executor.
Thanks
Manmeet