Bugs in content types

Hi, I don't understand why often" speaks the words" recognise the right sentence but cosider it as a wrong answer ...

Wordpress, windows, chrome. Language French

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Hello forum-users. We´ve a problem with the element "interactive video" by H5P. We want to use our video production platform by the hanover university and so we tried to embed the URL of our video. In step 1 you´ll find a detailed description of the problem. After saving the video there isn´t any content but it says "video format not supported." at the video screen. Does anybody know what to do?

Hello forum-users. We´ve a problem with the element "interactive video" by H5P. We want to use our video production platform by the hanover university and so we tried to embed the URL of our video. In step 1 you´ll find a detailed description of the problem. After saving the video there isn´t any content but it says "video format not supported." at the video screen. Does anybody know what to do?