Proxo not working

So I haven't been on Roblox lately so I hadn't updated my Proxo for a while, and had to download the newest one.. which is totally different from the old one so I'm already confused. Anyways, I can't get the injector to pop up.. I click the little button in the corner and nothing happens? ALSO while I'm here, where in the world do you put scripts now? Is it the settings button.. because when I click that it looks like somewhere you would but the submit button says "button136." Sorry for so many questions I'm just obviously not good at this and don't know basically anything.