I’m often needing to add things like pricing tables to client websites, or embed a table of figures in a blog post, and it’s a pain that Webflow’s rich text areas don’t support tables.
Here’s a hacky but reasonably functional way around that limitation;
I did just as it has to be done. But its only an icon of a broken image on live site. What could be wrong?
Now that I pasted it here, it’s working. On a live and published site it’s not 
Either the URL is wrong, or you haven’t made the document viewable to the public.
TRUE, that was an issue.
How come that here on forum, worked? 
I’m not sure, I can’t see your site, but my guess would be that your <img> tag is broken. Make sure it’s HTML5.
Try embedding another valid image URL, like this one-
https://via.placeholder.com/350x150