When a campaign is delivered the campaign summary page will reflect email analytics regarding how many emails have been delivered, opened, clicked, etc..
Sometimes this data may not be flowing into the campaign summary page and will give an error, "Sorry, there is no information available." This indicates either no emails were delivered in the campaign (could be a push notification campaign) or the SendGrid webhook needs to be updated.
Submit a ticket to support.punchh.com for further investigation.