How do I assign a page to my subscriptions and link that to 2 checkout?

I am trying to set up a subscription account through the membership plug. I have a account set up with 2checkout, and had everything working, and then the subscribe buttons dissapeared from my subscribe page. I can’t figure out how to make the connection again. It shows that 2 checkout is active as is all of the subscription options.

I am not grasping at how the connection is made between the subscriptions entered in the members section, the page those options should appear on, and how they are linked to 2checkout ? I can’t find anywhere to designate the page assignment of the subscription subscribe buttons with links to 2 checkout. When I initially installed, it seems like this all connected automatically, so I don’t know what I am missing?