Private repos access via registry.docker-cn.com?

Hi.

We have a private repository on DockerHub and we also have a new infrastructure in China AWS.
Currently - we are using JFrog Artifactory in Europe to store images but this leads to really loooooong pulls from instances in China.

Today I googled a “registry.docker-cn.com” here - https://www.docker-cn.com/registry-mirror and I can pull images from my own public repository using this mirror.

The problem is with a private repo. After login (successful) - I always have “Error: image setevoy/imagename:tag not found”.

Does anybody know - can this mirror be used for private repositories?