Prosite not working and no widgets displaying

Hi there, I’m trying to use your Pro Sites plugin, but it’s not working, I don’t know where the short codes are to add the relevant info to my site, and on the front page I’ve used the widget which shows error, at the same time the CSS is a mess, if I look at the UPFRONT theme page: or with any other theme??

I really want to get this to work but it seems almost impossible now?