I was working on a project and web-published it to xxx.flutterflow.app subdomain.
I deleted the project to start again from scratch, but the app on xxx.flutterflow.app is still active and available and thus subdomain can not be taken again by my new project. But I want to use it again.
How to delete the app which is published on xxx.flutterflow.app and recover the subdomain xxx to be used?