Yes, my understanding is that the site can set up the paypal payment schedule but to cancel or alter it you need to use paypal itself. It also appears that when the guild says that its expiring that paypal might continue to take regular payments out until you ask it to stop.

Payments and all card transactions are outside of the scope of even admins here and its solely down to you and paypal and Robbie who might be able to do something but we cant.