Generally, this happens when after submitting a campaign for approval, the admin deletes the campaign on the Punchh platform. So, when another admin will try approving the campaign, it will redirect them to the Campaigns tab instead of the campaign page.
To confirm the same, please check with the admin who created the campaign for approval or you can create a ticket on support.punchh.com.
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)