We do have hard coded paths to wp-config.php in our landing page rotation script. But this accounts for 99% of WordPress instances and has been cleared with the plugins team. We needed to go this route to help prevent a number of issues with caching interfering with Landing Page rotation. We have our reasons for keeping it. Maybe in our future we’ll discover a better method.
https://github.com/inboundnow/landing-pages/blob/master/modules/module.redirect-ab-testing.php#L3-L24
About the duplicated metaboxes, I am not sure what you mean. You’ll have to open a support ticket and I’ll address them.
https://support.inboundnow.com
Now that we are starting to pick up in revenue a bit we are hiring help to improve our UI. It’s still a good product and does not deserve a one star review.
I have too many people telling me good things and customers that stay with us, brag about their work, and are satisfied with our products, both free and paid.