Thanks for reaching out. We've seen similar reports and are currently looking into it. In the meantime, try re-uploading the thumbnails to see if it's otherwise. Will keep you updated, appreciate your patience.
@TeamYouTube @YouTube @YTCreators
What’s going on with the thumbnails. Just seen one of my videos and it has been changed to a terrible picture
I don’t get many views and that’s really not helping get more views
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It seems to be on the search part that’s the problem The profile has the correct thumbnails and the YouTube creators app is ok Will try as you suggest and reupload them again
End of conversation
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