I had a problem with live view which was solved in minutes by Teodor. And it had nothing to do with the extension but with my settings in DW.:

Hi,

I tested the new AppConnect extension and it works fine but it does not render in Live View at all. Using a browser preview shows it though. Would be nice to control the output as shown in the video

Teodor'S answer to this problem:

App Connect works just fine in live view - this is not really limited by us. Make sure this is enabled in DW:

tawk.link/56dd4e2cba96cf5d2cafc9af/t/cc521560-f43e-11e6-b38c-cb148618fda8/20c230f4459b1ed14e87a1e3785fe842f88da6f4/Screenshot_1.jpg

Problem solved. I did'nt have "Use Testing Server for Document Source" enabled.