How do I make one wiki the root breadcrumb

I want this to be displayed as my root breadcrumb

http://ecopsi.org/edu/encyclios-paideia/

This is the path of my wiki root http://ecopsi.org/edu/

I tried this because it sounds sort of like my problem but resetting the breadcrumbs in permalinks didn’t do anything at all.

https://wpmudev.com/forums/topic/wiki-breacrumbs-bug-path-out-of-order-returns-page-not-found

Permalinks are now set as following.

Day and name

http://ecopsi.org/2014/09/21/sample-post/

Help please