Board Thread:Support Requests - Getting Started/@comment-28177062-20200223194704/@comment-9605025-20200224000332

Have you tried changing it while here on Community Central? There is a bug where local wiki permissions can impact the upload process even though the avatar is a global thing. However, this should not be a problem here on Community Central. If you are unable to change you avatar while on Community Central, then the issue is something else.