I inserted a Youtube video in quesionnaire using embedded HTML.
It is visible in the editing window, but it's invisible in the preview window.
The error message said "The question 15 was not saved. Only the subcategory of HTML markup tag can be available"
How can I sort this issue out?
Attatched the screen shot of the window. 
Solved
Video is not visible in the preview window.
Best answer by ahmedA
This is due to your account's license. Please check wtih your brand admin/Qualtrics support.
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