Thank you for reaching out to the Constant Contact Community. My name is Adrienne and it's my pleasure to assist you today.
I have taken a look and it seems the reporting information is available on your older campaigns. If you are having trouble with a specific campaign, can you send an email to social_support(at)constantcontact(dot)com with your username, the names of the campaign you are looking for data on, and a reference to this post? We will be happy to look into it from there.
Thank you for choosing Constant Contact. Have a great day!