the last time i used that web development tool, it made all text into graphics, making it basically useless as a proper development standard for web based criteria.
if you google the problem your having you might find this information.
this only applies if the port has changed as well on your hosting server
The Server Port is a setting available in the advanced settings in Publish view. To change the Server Port...
Go to Publish View and click Setup.
Select the Server Locations tab of the Publish Setup window.
Select the remote Server Location from the list that you want to edit and click the Edit button: the Location Properties box appears.
Click the Advanced button and the Advanced Settings window appears: there you will see the Server Port field.
Change the port number as needed (for example 2001 instead of 21), and click OK until you are back out of the Publish Settings.
The next time you publish your site, Fusion will use the new port specified for the FTP transfer of your files.
Note: check with your system administrator to verify the new FTP port before making a change.