Instagram api response 400, no data is returned

I have created a short term token to grab instagram business account data from https://developers.facebook.com/tools/explorer/ with following permissions

pages_show_list business_management instagram_basic pages_read_engagement pages_read_user_content 

and then i extend the short term token to longterm from https://developers.facebook.com/tools/debug/accesstoken/?access_token=SHORT_TERM_TOKEN=v21.0

But when i request instagram for grabbing media

curl -X GET "https://graph.instagram.com/me/media?fields=id,caption,children,permalink,media_type,media_url,username,thumbnail_url,timestamp&access_token=LONG_TERM_ACCESS_TOKEN" 

It throws error

"Sorry, this content isn't available right now"

What am i missing?