Sorry if my query just shows how little I know!

I have used Xara web designer without a problem for many months. But I am having trouble now, uploading my website, ever since I had to redo the web properties after a problem with my laptop when i temporarily lost all my files.

Now:
1. To begin with I kept getting a message that I had the wrong password. i tried resetting the password at the provider (names.co.uk). But this has not helped.
2. Then, for the last few days, whenever I try to publish, all I get is the message "FTP session terminated".

Can you help?