How to disable Wildcard SSL by Let's Encrypt in Plesk?

Question

How to revoke an option to issue wildcard Let's Encrypt certificates via Plesk?

Answer

1. Log in to Plesk.

   Note: In case Panel.ini Editor extension is already installed, skip the next step.

2. Install the Panel.ini Editor from the Extensions menu.
3. Open Panel.ini Editor at Extensions > My Extensions.

4. In Panel.ini Editor, switch to the Editor tab. If the editor is empty, do the following:

   4.1. Download the panel_ini.txt file.

   4.2. Open the downloaded file and copy its content.

   4.3. Paste the content into the editor.

5. Append the following lines to the panel.ini file:

   CONFIG_TEXT: [ext-letsencrypt]
   allow-wildcard-certificates=false

   Note: to allow issuing wildcard certificates, change false to true in the above line.