Hello Susan! I'll group my answer into two:

<< When I logged in on my I-pad it took me to someone else's site I do not know. >>

Just to clarifiy, were you taken to someone else's public website? Or are you saying that you saw someone else's site when you signed into your private dashboard? Let me know!

<< I typed in my Xanga address and could see it, but it was way scrunched up. When I log in on Internet Explorer on my laptop, my layout is messed up. It appears my entries are there, but I can't see the other Xanga's I link to on the side bar. In addition, my top bar is huge and takes up the whole screen until I scroll down. >>

Ok just took a look at your site!
http://texansusan.xanga.com/

We imported everyone's themes into a basic theme, but it won't quite match 100% of your old look. It looks like in your case, the top bar is too big - sorry about that! We are going to prioritize making the themes system more easily customizable and powerful... I talk a bit about that here!
http://thexangateam.xanga.com/2013/09/03/the-four-phases-of-the-xanga-2-0-launch/

Hopefully we can get your theme fixed up soon, once the customizable options are back in place!!

And please let me know about that other person's site that you saw!!