khelpcenter Missing content

IS KHelpCenter has a problem with missing content? When I used it, I found that the manuals included were very limited. Compared to what the official website image shows there is a lot missing, especially the key ‘application manual’ section, which only contains a brief description of the software itself.

official
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My situation

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I’m still in the same situation after trying to reinstall it in different ways and changing the language.It’s just the software that needs repair content right?

And are there any fixes planned for khelpcenter that I may can help in the near future?