I’m new to modx and are planning to use treasure chest cart for a project for a client. They need to use Paypal standard and have a few sections of their website with subscriber-only content where the user pays a annual fee to have access to certain documents/pages in modx and also to get access to certain files (pdfs, etc.). We don’t want someone who has the URL to forward it to a friend and let them download things for free without being asked to logon and have it check their paypal subscription. What approaches do you recommend to doing this with treasure chest so that it will work with paypal standard (as subscriptions or as a purchased item like foxycart does) and controlling access preferably by creating/modifying the modx webusers and their blockedafter date to only allow users with currently valid subscriptions to access this content?