If you need support from Yola please contact us via support@yola.com 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!
In addition to Littleus' advice, you may be looking in the wrong place! The background is no longer in Properties but on the Yola toolbar. This tutorial explains all: http://www.yola.com/tutorials/persona...