Hello,
I have studied your job post and understood the task. I can help you to Install Ubuntu 20.04 LTS Desktop with disk encryption on server.
As I am Senior Server admin, well versed with Linux, Unix, Ubuntu, Digital Ocean, SSL installation, SSH, VPN, Open VPN, VPS server, AWS- AWS S3/EC2, WHM/cPanel, CentOS, Godaddy, Plesk, Apache, PHP, Nginx, SMTP, SFTP, and many.
Can you please share website and server ftp details?
Regards