How to Disable your Website in Plesk
To change your Website Status to Disabled, perform the following steps:
1 – Logged in to Plesk.
2 – Go to Websites & Domains.
3 – Click Hosting Settings below the site’s name at Websites & Domains.
4 – In Website status click [Change].
5 – Select Disabled (formely known as Suspended).
Visitors will see the web server’s default page set by the hosting provider, and the site’s search engine rankings will drop.