Kasper,
Is it just avatars that don't import, or is it profile fields as well? If it's just avatars it could be a permissions thing. If it's both, it's a configuration error or conflict somewhere.
Generally, if it's a configuration error, it can be caused by a few things, like:
* You have a different User plugin that's conflicting. Any User plugins that try to redirect the user on login are generally the culprit because they prevent our login flow from executing
* Your Kunena version isn't compatible with our plugin. Can you let me know what version of Kunena you're using? I think we support all the recent releases, but it's possible we missed something.
Thanks,
Alex