https://instantview.telegram.org/checklist#3-3-supported-elements "Check that pages that feature unsupported content do not generate IV pages". It is good that your tricked the IV engine and replaced the video with its preview, but following the guides is essential.
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"Check that pages that feature unsupported content do not generate IV pages". It is good that your tricked the IV engine and replaced the video with its preview, but following the guides is essential.