If you downloaded DisplayFusion 12.0 and are having issues with languages please re-download and re-install. We have repacked the release as 12.0c with the languages fixed.
I have a sinlge large monitor I've made virtual monitors on, and displaying a single task bar. but, is there a way for that task bar to display across the entire screen not just one virtual screen?
In the DisplayFusion Monitor Configuration window, you can uncheck "Taskbars" in the "Use these features with split monitors" section, and it should do that for you.