Hello,
1. To show upsells you need select layout with sidebar in Theme Options > Single > Product Page > Sidebar position. How to set upsells read here: http://docs.woothemes.com/document/related-products-up-sells-and-cross-sells/
2. To make header shown go to Theme Options > Header > Breadcrumbs background and change background color for breadcrumbs section.
3. I’ve checked the converter in the sidebar on products page and it’s working fine.
4. Sidebar isn’t shown on Sale page because you have categories displayed there and there is nothing to filter (prices and products aren’t shown).
5. Your data won’t be erased. You can install templates variants.
6. Go to Products > edit a product and mark it with brand on the right side.
Thank you. Regards, Eva Kemp.
