I recently upgraded to version 12 (from 10). I have three websites and wanted to finally make them "mobile freindly". Version 12 did this wonderfully for two of my websites. The third one looks great in preview but upon publishing to the web nothing has changed. I did exactly the same things: checked the "enable responsive design", added a logo to the responsive header, it really is a simple process, I dont know why it didn't work on the site: WWW.phoebefishingcharters.com ?