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!
There isn't a button that does this directly in the sitebuilder but you can use this Text Editor to format and spell check your text and strip out MS Word code. It will generate valid markup which you can safely paste into the Yola site builder.
If this doesn't solve the problem, please let me know.