Generating redirecting file under the new subdomain to fix the dns issue that happen

Adding the domain is straight forward, and moving the files is described here: How to move a website to a different directory File Management and FTP > Every website is linked to a certain htdocs directory on your account. But sometimes you need to move a website from one htdocs directory to another. This may be necessary if: You are moving to a different domain name (e.g. a free subdomain to a custom domain). You have recreated your domain name and it was assigned to a different directory. Fortunately, there is no need to rebuild your website from scratch. It’s not difficult to move your website from one directory to another. How to move a… As for what other steps you need to take, that depends on how your website is built, so it’s not possible to describe that in a single guide that works for every website. But since you’ve mentioned wp-config.php, it means you’re using WordPress. For WordPress, the only thing you need to do is update the site URL: Migrating WordPress – Advanced Administration Handbook | Developer.WordPress.org However, that’s with the caveat that some plugins may require additional steps. But again, that depends on your website.