NBextension does not install properly. Have searched around and cannot find a definitive answer. Does someone know what to do?

Question

as stated in the question, I am having troubles installing nbextension. Or rather, getting other extensions to show up. I installed nbextension using conda install and it seems to show up in my notebooks, but the list of extensions is very small, as can be seen in the image below.

List of nbextensions

When asking for the extensions in anaconda prompt using jupyter nbextension list, this is what I get:

(base) C:\Users\xxx>jupyter nbextension list
Known nbextensions:
  config dir: C:\Users\xxx\.jupyter\nbconfig
    notebook section
      nbextensions_configurator/config_menu/main enabled
      - Validating: problems found:
        - require?  X nbextensions_configurator/config_menu/main
  config dir: C:\Users\xxx\anaconda3\etc\jupyter\nbconfig
    notebook section
      jupyter-js-widgets/extension enabled
      - Validating: ok
      nbextensions_configurator/config_menu/main enabled
      - Validating: problems found:
        - require?  X nbextensions_configurator/config_menu/main
    tree section
      nbextensions_configurator/tree_tab/main enabled
      - Validating: problems found:
        - require?  X nbextensions_configurator/tree_tab/main

I would like to install Hinterland and Snippets Menu, so it would be amazing if someone could help.