FTP stands for File Transfer Protocol, a standard network protocol used to transfer files from one host to another and is commonly used for uploading and downloading files to and from a web server.

Change your FTP password by following these steps:

1. Login to your 1st Domains Account
2. Click on 'Manage Domains & Services'
3. Click on the domain name in the list
4. Click on 'Web Hosting Control Panel' to be logged into Plesk Control Panel
5. Under the 'Hosting & DNS' tab, click on 'Web Hosting Access' or 'Hosting'
6. If using the "Web Hosting Access" option. Under the System User enter or generate a new password. Click on Ok
7. If using "Hosting Settings" scroll down the page and look for Webspace settings. Under there you will have a system user's credentials. And it is here that you generate or add a new password. Use the copy option to save the newly created password. Click "Save" at the bottom.
8. Make sure you note that down as you will need that password to use with your FTP client.

Important: Make sure your FTP password is very strong. So, use capital letters, numbers, and special characters throughout the password. Using the generator will generate a strong password for you.