Sometime back Youtube has changed the way the categories work. They do not provide categories for each video anymore. Hence we will not be able to allow/block videos according to categories alone. The youtube category filtering may not be effective as the videos are not categorized anymore by youtube.com.
Previously our Mobicip filtering was increasingly algorithmic and works dynamically, while the categories were based on a URL database that we originally started with about 8 years ago.
Now we recently rolled out a change where the old categories are replaced with the revamped ones. The new categories are more logical and robust. In other words, you will not find any sub-domains being listed in the new categories. You can just either allow/block the category itself.
Mobicip filters YouTube by reviewing the title, description, comments and other meta information associated with each video. In most cases, the publisher would include suggestive words and phrases with the video and it would be blocked by Mobicip. Like any filtering product, Mobicip filters the content on a best effort basis and goes beyond most other products in terms of the quality of filtering. Mobicip is the only filtering product that offers YouTube filtering on a video-by-video basis. So, please try accessing youtube.com through Mobicip and see its effectiveness in terms of filtering inappropriate content.
Mobicip Support Apr 11, 2017
Re: Sub category won't open