Thanks for writing in!
Please never share login details in public. Always use secure note feature so that the information is in between you and Themeco staff. I have moved the credentials in secure note.
Regarding demo content, I see that you are using Renew Demo. Please note that Renew falls under Standard Demo content wherein you get home page layout and placeholder images. Standard Demo does not contains full working website. For that please consider Expanded Demo contents.
For More information, please refer following resource:
I tried editing the page in Cornerstone and can see that Cornerstone is not loading. I checked the server configuration and that seems to be fine. Next, I tried to clear cache and deactivate all plugins except Cornerstone but that also is not solving the issue. At this moment to test the issue further, please share FTP login details in secure note.