Hello @TeamYouTube , I would like to know, why are not the thumbnails of the videos on my channel? What happens is that all my videos had thumbnails, and now they are no longer seen.pic.twitter.com/10DKNkIopT
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So there is a way to opt out of this right. Also please tell me at least a few are large channels and not just small channels that can cause a negative effect to only.