Step 1: Log in to your Plesk panel

Step 2: Go to Subscriptions → Select the Domain you want to change



Note: Once you change your main domain name, all subdomains will be automatically changed under the created main domain.

Step 3: Select Hosting & DNS → Hosting

Step 4: In the Domain Name field, type your new domain name and save it

Step 5: Once you change your domain name, reissue the SSL certificate for all subdomains under the created main domain.

Step 6: Select Dashboard → SSL/TLS Certificates

  1. Choose Reissue Certificate

     II.Click the Install button under Install a free basic certificate provided by Let’s Encrypt

     III. Enter your email address and Select the options according to your needs and choose Get it Free to reissue the certificate.