Hi Peter,
Unfortunately, it seems that only the one solution you provide can translate kb article automatically, so you need translate it manually.
And I try to download and install it, there is not any error appear in the environment, can you download it correctly.
I download file from address as following screenshot shown:


Then i import the solution:


But AutomaticKMTranslationSetting entity not appear under ‘service’ automatically after importing the solution, so I add it manually.
Go Settings > Apps to open one app designer.


Click pencil button of the site Map to go to Sitemap designer page to add the entity:

After Saving and publishing all customizations, the entity will appear in the sitemap, then you can do other settings as document provide.

Regards,
Leah Ju
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