Can not change email address on website

I have for a long time had my own website and server using nginx
sofware. I
have only one page and use (gksudo gedit
to make changes to the site with no problems until I wanted to change
email address. I delete the old address then type in the new one then
but it remains the same, I also have deleted the old one then saved then
typed in the new one and saved again but nothing. I have deleted and
left it
deleted then save but it still shows the old address. I am using ubuntu
LTS. Thanks for any replies

Posted at Nginx Forum:

Your site is cached in your browser. Edit your email address and then
use Google to figure out how to clear your browsers cache.