I've been trying to change my old profile pic at trello, already changed the one at atlassian account, but without any success. I've tried to change the atlassian profile pic many times, but the trello profile picture wont change.
Thank you for reaching out to us about your avatar.
I've seen this happen once before in the past and it was resolved by removing your Atlassian account avatar and re-uploading it so that the sync can happen again.
Could you please give that a try and let me know how it goes?
All the best