How can I update my payment information? Charlie June 09, 2021 16:01 Updated You can update your payment information on your Picnic account here. Related articles How do I cancel my Picnic subscription? Why is Picnic a subscription service? How can I update my account information? How do I adjust or modify my Picnic subscription? What is the Picnic Refund & Return Policy? Comments 0 comments Please sign in to leave a comment.