SSL from Comodo not working

I have a Free SSL Certificate from Comodo. I’ve uploaded it with no problems (I generated a CSR and private key through the CPanel), but if I access my site through HTTPS there is a Self signed certificate. What I have to do?
My site is

Thanks for help.

I’m sorry. Now it’s working.

The installation of an SSL certificate itself can take up to one hour. After that, your browser may still remember the old, self signed certificate and not show a green lock yet. So as long as the SSL certificate is accepted by the control panel, you can sit back and wait for the issue to fix itself.