Adding Domain to Sites [Self Hosted]

I am struggling to get this working. I stood-up a new server and deployed appwrite 1.7.4. I added update .env file _APP_DOMAIN=appwrite.mydomain.com _APP_DOMAIN_TARGET=appwrite.mydomain.com

I add the same as Flutter web platform on console and added A records in my DNS to redirect to server IP. All good thus far. Appwrite issues SSL certificate and I can access appwrite console using appwrite.mydomain.com.

Now I want the mydomain.com to redirect to a flutter site I deploy on appwrite sites so

1.) I create a new site by cloning Flutter starter template. 2.) I add www.mydomain.com flutter web platform in console. 2.a.) I try to access the www.mydomain.com via browser i get error 401 [Screenshot attached] 3.) I try to add www.mydomain.com to hosted site domain and it gives me a "Domain is already Used" error. [Screenshot attached] 4.) I remove the domain from console platform and then try it, same error. 5.) I have a spare domain so just to try I add a different domain www.mydomaintest.com to the Appwrite sites domain and it works.

Is there a way to get the main domain to re-route to a hosted website so I can have api endpoint be a subdomain of the main domain ? or It has to be a completely different domain for sites to accept it ?