Paypal Preapprovals can be set up with a maximum of 120 monthly payments and $10,000 in total billing. These limitations are set by Paypal.
All recurring payments through JVZoo using Paypal are setup via the Adaptive Payments API as a preapproval. Preapprovals are very strict contracts between the buyer and seller. The contract set up cannot be modified other then the customer changing their own backup funding source within their Paypal account. Receiver accounts cannot be changed, or any dates or terms of the contract. If a preapproval has been cancelled it cannot be restarted unless the customer starts a new agreement by signing up again.