Apple does not allow developers to interact with iTunes accounts, so you must manually disable auto-renewal via iTunes. Please click here for instructions on how to disable auto-renewal.
Jack'd has a no-refunds policy for subscription purchases made via iTunes. If you are encountering difficulties or are unsatisfied with the service, please submit a support request and we will be happy to assist you.
As above, Browsing Pro and Messaging Pro combined give you all the functionality of Jack'd Pro, so if you have both subscriptions and you wish to remain billed on a monthly cycle, you need not make any changes. If you have only Browsing Pro OR Messaging Pro, or you have both but wish to take advantage of the discounts afforded by longer Jack'd Pro subscription durations, you can upgrade to Jack'd Pro immediately, BUT BE STRONGLY ADVISED OF THE FOLLOWING: