To cancel the recurring gifts on the old give online site. you will need to follow these directions
To set up a new recurring gift on GiveMN.org, use the donation form on any fundraising page. You can manage all of your recurring donations from your account area by logging in using the fields in the upper right corner of GiveMN.org.
Recurring gifts may be suspended indefinitely by logging in to your account on GiveMN.org and clicking the ‘modify’ button for the gift you wish to cancel.