When checking mail, I noticed the PGP option was not available. It should look like this:
So, I followed this:
https://support.plesk.com/hc/en-us/articles/115002313594-How-to-install-GnuPG-PHP-extension-for-Plesk-PHP-
But still missing.
How To Install and Use GPG Encryption In Linux In Order To Encrypt and Decrypt Files and Folder?