In order to configure Dreamweaver for uploading your files please do the following:
1. Click on Site at the main menu bar and select New Site: 
2. Put some site name (for example my_website) and select Local Site Folder where web pages will be stored on your PC: 
3. Then click on New server in the Servers section and put the following settings: 
Server name: server your domain is hosted on
Connect using: SFTP
SFTP Address: server name or server IP address
Port: 21098
Username: your cPanel
Password: your cPanel password
Root Directory: public_html/ or /
Web URL: http://your_domain_name 
4. Hit Test to check if the settings are correct and the connection is successful: 
5. Now you can create your web pages. Once it is done, you can upload them on the server this way: find the Files window and click on the Put file(s) button: 
That's it!
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