Why Imported Page Shown 404 Error?
If you imported funnel/page via share funnel link and notice that the page gives a 404 error when you try to view it, here’s what you need to do.
On the selected funnel step, click on the green save button. Repeat for every of the funnel steps you have imported. Then click to view the funnel step (i.e., page), and you should be able to view it.