Liven up your dripped series membership content by adding Custom Post Types to your content release schedule with this code recipe….
Restrict Access by Membership Level for Custom Post Type (CPT) Categories
The code recipe below sets membership restriction on a Custom Post Type (CPT) category. When a non-member visits a CPT in a protected category (either a logged out visitor or a logged in user without membership access) they will be redirected to the membership levels page (or another page as defined in your custom function).
New Add On to Auto-Detect, Protect and Redirect Custom Post Types
The Custom Post Type Membership Access Add On adds the ‘Require Membership’ meta box to all CPTs selected and redirects non-members to the selected page.