That's odd, could you try clearing your browser's cache/cookies and checking it on Incognito mode? Also, try checking it on a different browser to see if it's happening there too. Let us know how it goes.
Thanks for trying those steps. The screenshots says that the file isn't supported, so mind taking a look at this help center article and give it another try. Here's how: https://goo.gl/S5Eqgz
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This Tweet is unavailable.
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Hmm, as a next step, please send a feedback report directly from YouTube with these steps: https://goo.gl/WdI0BK . While every individual report may not get a direct response, we do review everything and use the details to investigate and fix issues.
End of conversation
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