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!
rose marie has given you good advice about unpublishing your site to in order to change it's name. Please see this tutorial on how to unpubish, if you are uncertain how to do it : How to unpublish your site.
Once your site is unpublished, publish it to the domain with the correct spelling.