Can't access website

I’ve been unable to access my website for about a week now. When I use Safari to try and open it I just get raw HTML code. When I try Firefox it says

“You have chosen to open (space here) which is a :text/x-server-parsed-html from (website name). What should Firefox do with this file? Open with (choose option from computer’s files) save to disc, do this automatically with files like this from now on.”

I don’t understand what is going on. I would be very grateful for any help. Thank you!

What’s the URL?