Set custom thumbnail via YoutubeAPI doesn't work. Can someone tell me why?

Question

I try to upload custom thumbnail for video.

Official documentation link: https://developers.google.com/youtube/v3/docs/thumbnails/set

Used scopes for requested access token was:
https*://www.googleapis.com/auth/youtube.force-ssl
https*://www.googleapis.com/auth/youtubepartner
https*://www.googleapis.com/auth/userinfo.profile
https*://www.googleapis.com/auth/userinfo.email
https*://www.googleapis.com/auth/youtube
https*://www.googleapis.com/auth/youtube.upload

Then i get response:

Error calling PUT https://www.googleapis.com/upload/youtube/v3/thumbnails/set?videoId=my_video_id&uploadType=resumable&upload_id=my_upload_id: (403) The authenticated user doesnt have permissions to upload and set custom video thumbnails.

I set all needed scopes and still have not permissions. How can i resolve it? Thanks.

Answer 1

I had the same problem. Found the solution:

Please verify your account by putting telephone number and enable "customised thumbnails" in your account's panel.

Docs: https://support.google.com/youtube/answer/72431