Installed ProFTP on Ubuntu and it is running but cannot login

I just spun up a new server on Digital Ocean that I plan to use for Backup files....my client has a website on a Share Hosting server running wordpress and I cannot get them to let me migrate to a better server. They have a WordPress plugin called Updraft which does daily backups and is able to upload the files to a remote server using FTP, so I got this server setup just for his backup files.

I installed ProFTPd on this ubuntu 12.04 server using the instruction here... https://www.digitalocean.com/community/tutorials/how-to-set-up-proftpd-on-ubuntu-12-04

Very basic Step 1...

sudo apt-get install proftpd

Step 2 Configure ProFTP....

Open up the file:

sudo nano /etc/proftpd/proftpd.conf

Go ahead and make a few changes:

Change the Server Name to your host name

ServerName                      "example.com"

Uncomment the line that says Default Root. Doing so will limit users to their home directory.

# Use this to jail all users in their homes
 DefaultRoot  ~  

Step 3 Access the FTP server....

Once you have installed the FTP server and configured it to your liking, you can now access it.

You can reach an FTP server in the browser by typing the domain name into the address bar and logging in with the appropriate ID. Keep in mind, you will only be able to access the user's home directory when connecting to the virtual server.

ftp://example.com

Alternatively, you can reach the FTP server through the command line by typing:

 ftp example.com

So I did all that and the FTP server is running now however I cannot login as I enter in my root user and the password for my root user on the server and that does not work.

I imagined it would have it's own user/passwords for this FTP but I saw nowehere in the article or anywhere on where or how to set a user/password for the FTP...did I miss something?

I don't even need a webserver. simply an FTP server to login and upload files from another server with!