Issue
You are trying to publish your web app to .flutterflow.app domain and face this error:
Error reserving subdomain. You have exceeded the quota for subdomains.
Why You Are Seeing This Error
There is a limit to the number of sub-domains you can publish on the flutterflow.app domain. Free users can publish to 3 subdomains, while paid plans can publish to 10 subdomains.
Tip: It only counts “custom” subdomains. By default your subdomain is your project id - these don’t count towards the quota
Solutions
Change the subdomain name (“Site URL” in the UI) to the project id.
When the name of the sub-domain is the same with the project name, it is not count as a sub-domain for you.
Unpublish Some Of Your Other Projects
Use the unpublish button in the web publishing page.
