Trouble downloading drafthorse from package manager

hello,

when installing from the package manager, it will say the plugin has been downloaded however opening the examples shows that the plugin had not been downloaded all components are blank. I am using windows 11, rhino 8. I am trying use 1.3.1. I would like to try to use this plugin, please advise. I have attempted to use older versions like 1.2 and still have a similar issue.