I am having a question about Hummingbird and how to optimize my site. When I am running the performance test Hummingbird tells me everything is fine except "Remove Render Blocking Ressources" and ""Optimize Images". As for the Render Blocking - I am given several CSS and JS files that could be compressed and I have done so several times, however, it always stays stuck at the same point. When I apply the changes nothing really happens it seems. As for the image: Hummingbird tells me I should optimize the pic I set as the logo. When I go ahead and try to smush it - again nothing happens. Could this be due to the fact that I have set this as the logo for my site? Any ideas how to solve these problems?