San Kloud theme not displaying correctly

I installed and activated the San Kloud theme for my blog and it isn’t displaying properly. I’ve opened my blog on several computers and several different browsers and it looks different everywhere. For example, on my laptop I have to scroll waaaaaay down to the bottom of my first page before a post shows up and when it does it’s an old post. On another computer my most recent post was right at the top but the side bar also had posts from october in it. And my archives are at the bottom when I thought they were supposed to show in the sidebar. It’s a mess! Any ideas?