Cannot access foxfamily.co.uk

hi

About 3 weeks ago I was in my site of foxfamily.co.uk, but last week when I tried to access it comes up with the following

Server not found

Firefox can’t find the server at https://www.foxfamily.co.uk.

Check the address for typing errors such as ww.example.com instead of https://www.example.com
If you are unable to load any pages, check your computer’s network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

Please help. I have sat here for hours trying to work out how to get in and reading previous posts with no luck. i would really like to access it again as I wish to update it.

Thanks
Paula (Greenhill50)