There can be several reasons:
your access provider is temporaly unavailable. In this case, your PC will be working with files which are temporally on the hard disk (hidden files) and you have the illusion that you are connected. In this case you must wait and start again
the navigator that you are using is an old version. In this case download Microsoft Internet Explorer 7.0 or an advanced version and install it, or call me at
+39.393 300 91 61
the site is not available due to the periodic maintenance of the system or a breakdown of the server. In this case wait until my site is available again.