How get views advanced dynamic URL contextual filter to work with full taxonomy path? I've tried all settings, with joint paths etc...but I just can't get the filter working properly, I know it's a settings thing, watched a whole bunch of videos but can't put my finger on it!

This is for advanced contextual filter, the dynamic one that can change depending on URL, not the static one.

Like this:

Animals
-Pets
-Farm


Path is:

localhost/animals/pets/cats.htm
localhost/animals/farm/cows.htm


I would like the filter animals/pets to show cats.htm content

I would like the filter animals/farm to show cow.htm content

I can get the filter working with single taxonomies, but not with full path. 

animals works, but not animals/farm and not animals/pets

Attaching an image with the screen where I should set this up
You must use 2 contextual filters

First one is: Contextual filter: Content: Has taxonomy term ID depth modifier

Second one is: Contextual filter: Content: Has taxonomy term ID depth modifier with the same criteria you did.

I put the view path to be the vocabulary name and tested contextual filters like:
//Hierarichay
      tag1
        tag2
        tag2

//Urls
    tag1/tag2
    tag1/tag3

The views gets results for the child tags every time {2, 3}.
If you didn't use the first filter it will consider the parent as argument.
Hope it solve your problem.