Cloudhub ssh login password & clientAuthorization

Hi Michael,
I use the Cloudhub in raspberry pi3B.I know it is base on a LEDE firmware.But when I want to ssh to the hub,I can't find the user name and password.I fine that someone say "Username: root (there is no password)".But the server log shows"User 'root' has blank password, rejected".
So I want to know How could I login to the cloudhub.
and is there possible to use clientAuthorization in Clouhub?

#2

If you have a licence then you can use clientAuthorization.

Use putty and press enter when it asks for password