uploading index.html doesn't update site!

[anubix]

I followed all the step correctly.
debian perfect install with ispconfig
set up a reseller with all privs
then a customer
then a site
then an admin user for the sitee

then i connect with ftp to the site.
upload a test index.html file to /web

when i load the webpage in a browser, i still see the same ispconfig smaple webpage!

i saw another post with the same issue, but the solution it gave (make sure the web usser is an admin of the site) didnt fix my problem.

does anyone know what this can be?