Calendar Web Embed

Calendar Web Embed

I am attempting to embed calendar on wix hosted website.   I have entered the embed code as provided in settings>>calendar>>web embed.  

The error code received reads:

" You are not authorized to access this page
Hosting website not configured properly. Please add "" under Hosting Websites list in this web embed"

After adding ""  I get a "404 Not Found" message.  

Not sure if the difficulty is me, wix or code provided by charm.   I previously had the calendar functioning on the website (quite awhile back - so I don't remember what I did differently).  

Any recommendations?   Thanks!