Display issues

This plugin, once I first downloaded and installed it for my client’s site, was everything and more that was needed by both myself and the client. However, after recent updates, I had errors displayed on my site to the widget not displaying correctly, to aspects of the page being broken, to the total amount of the estimate (a key portion of what the plugin is intended to do) not displaying as it should. I wish there was a way to go back to how things were or being able to have the new features without things being broken.

The page I need help with: [log in to see the link]