I am trying to add custom domain to my new app on Firebase Hosting. Following official documents, I pressed "add custom domain" button in my project's Hosting page and stared a wizard.
In the wizard step 1, I entered my domain "example.com" and press "next" button without check a redirect checkbox. Then spinner stared to spin but after 1-2 seconds, spinner disappeared and the wizard were still on step 1.
I deleted the app and deployed again but same problem was occurred. Also I tried in secret window of Chrome but the situation did not change.
The domain is connected to old VPS server.
Any error was not shown.
How can I solve this?
I tried to another domain as a test but the result is same. Deleting and recreating the project did not affect the problem.