@TeamYouTube My YouTube account is verified but it won't let me choose a custom thumbnail. The video for the thumbnail I want to use it on has been uploaded for 3 weeks so I'm not sure if that has something to do with it. Do you know how I can fix this?
That's odd. Can you file a feedback report w/ details here: https://goo.gl/ULeL6C ? While every report may not receive an individual response, we do review everything and use the details to investigate and fix issues. Thanks!