Very sorry for the delay. Your 'pristine' site isn't working right now, but I tested on the 'test' site. (I'm not sure if you mixed those up, also, since the pristine site is using a port).
Either way, yup, the avatar didn't import. I see you're using Windows though, which is less common for Joomla. We do testing with Windows, but it's possible we missed something with the avatar importing/saving or there's specific configuration settings we're not using for a Windows environment.
The best thing for us to test would actually be FTP access, since we'll need to edit code and debug the cause from here. Joomla super admin access could work if we can't get FTP since we can install a filemanager, but that's much more prone to complications. If you don't mind private messaging me credentials, please use the mail icon under my name to the left to do so.
Thanks,
Alex