PayPlans incorporates Community Builder(CB) registration integration. This feature allows any new users who want to register to the site, to be redirected to the plan subscriptions page before registering to the site. This feature benefits the closed community to force users to subscribe to a plan before allowing them to register to the site.
Setting Up
To setting up this, navigate to backend PayPlans > Settings > General > Checkout and set Registration Integration to Community Builder.
Frontend
Before subscribing to a plan, the user will be presented with an option to register to the site as shown below. This user registration will be handled by Community Builder. Once the registration is completed, the newly registered user will be redirected back to the Invoice Checkout Page to complete the payment process.

