I am sorry to hear that this is happening to you. The change to the interface should have no bearing on how the site is running. Constant Contact is a little different that some other websites, as it requires more bandwidth, so that you can view and edit your campaigns. What you are experiencing may be browser or speed related. I would recommend going through this FAQ to see what could be causing this and, so that the web browser is optimized for use with Constant Contact.
Hello @Northeastern.WoodWorkers. I'm so sorry that you're having difficulty navigating your Constant Contact account. We understand how important it is to work within an account and be able to complete your tasks with ease. If I may ask, what exactly were you having difficulty with? Was it while you were creating an email or maybe finding an old campaign? We are actively taking feedback to improve our product and I would be more than happy to send your feedback to our developers. If you do not wish to reply here, please email us at social_support(at)constantcontact(dot)com.