Embeding a local URL in local content

Hi,

     I having a problem with my embeded link. The page I want to embeded is store in interne server. When I test with my sharpoint online page, Rise accept my adress, but I can't see my page (it's totally noraml). When I publish my Rise and I put it on the server, I can see the page. The problem is when the page is stored in internal server Rise don't accept it and mark my adresse invalid. 

Is there an issue with my URL?

Here's an example : https://foldername/pageName

PS : I know I can create a Storyline project with a Web object, publish a review and then add it to my Rise, but since Rise offers to embeded a page I would love to skip creating Storyline project