If you need support from Yola please contact us via firstname.lastname@example.org or make use of our live chat service! We are working on a new approach to community-based support and during this transition period we are not adding any new threads to this forum. Many thanks to everyone who has participated over the years and we look forward to unveiling a new peer-to-peer support system soon!
Did you register your website with DISQUS? (Click here for step by step instructions.)
If DIQUS isn't working out for you, I suggest using HTML Comment Box. (See the link above and scroll down.) If you're having comments for a blog, instead of pasting the code in an HTML widget, paste it where it tells you to paste the DISQUS code in the Blog Manager.
If you are seeing that error message in your Sitebuilder - it should be okay! Just publish your site and you should see your comment box working. If you can please share with us your URL, then we can see if the comment box is working as it should.