Admins can manage the recurring donation payments from their WePay account.
1) Go to admin panel > Transactions > Recurring Donations tab
2) Click on the recurring donation record from the list
3) Click Manage Payment Info button on the record
4) This will take you to the WePay site. Lastly, click on the Cancel Approved Payment button.
This will cancel the recurring but still keep all the donations that were previously made. The donor can also cancel their recurring from their bank account.