How Do Members Access Content?

Hi. I have nearly 200 posts that I have divided among Free, Platinum and Private Label membership levels. I see that I have Members Only pages for Platinum and Private Label and Free membership levels. However:

PROBLEM 1:
I created a Free account for myself. When I login, I’m redirected back to the Free registration page, and I’m not able to go any further because the system sees me as already registered.

PROBLEM 2:
When I view the Platinum Members Only page and the Private Label Members Only page, they are each empty (there is no protected content). I have not created a pay account for myself yet to test for problems here.

How do I make all of the posts that I have divided among the membership levels actually visible to the appropriate membership levels?

Thanks!

–Shaune.