问题： 当我像http://moonstarinc.com
一样访问它时，我的网站无法正常工作但是它可以很好地用于以下任何URL www.moonstarinc.com http://www.moonstarinc.com
我正在尝试为admob设置此URL-URL：https://moonstarinc.com/app-ads.txt
您可以在这里参考：
https://firebase.google.com/docs/hosting/custom-domain#domain-key
Apex domain
Common inputs include:
@
The apex domain name (for example,example.com)
Leaving the Host field blank
Subdomain
Common inputs include:
The full subdomain name (for example,app.example.com)
Only the subdomain portion (for example,app only,and leaving out .example.com)
Only www for the subdomain of www.example.com