Unable to acces Power Designer web portal

I'm trying to access the Power Designer portal from borwser; something like this:

https://powerdesigner-web/resources/index.html

But the page is not loading, and this is the message: This page can’t be displayed.

Do you have any suggestions? It could be something relatied with the SSL if yes how can enable this? I need to mention that i already tried to enabled the SSL, but i don't know if I succeed.

Thanks, Madalin