Issues with categories and password plugins

Hi,

I'm setting up my multisite here (causepages.com) and a few issues with plugins:

1) The registration form doesn't ask for the categories I've set with the Site Categories plugin. I also tried selected a category with dashboard with a test user and although it remains selected it doesn't show on the landing page: causepages.com/blog-categories/

2) I've installed the plugin to allow the user to choose their own password but that doesn't work either - it's still automatically generating a default password

Thanks