Once you have run the wizard to generate the pages you should make updates on the pages themselves... the wizard can not be entered again for updates.
eCart has more shipping options, but if the ones paypal offers work for you they can be used instead.
Contact UPS and get one... they have updated their system and we have not yet updated the cart to work with their new API. You may need to contact them directly to get the legacy information... we plan on updating eCart in the next couple of months in order to address this issue.