when i click Paid subscription or anything eles in core features it redirects to features & options wth im usin smf 2.0 rc 1.1 why does it do that?
It should be taking you to the relevant part of the configuration for that feature.
For example, in a brand new 2.0 RC 1-1, I turned on Paid Subscriptions, hit Save and the heading for Paid Subscriptions was a link. Clicking on it takes me to the section of the admin panel where I can configure Paid Subscription details.