If you are having difficulty logging in SSH and Browser just reset the miner and then use "Admin" or "admin" as username and "root" as password.
Anyway, if you don't know how to hard reset the miner you can follow the guide from here
Three Ways to Restore Factory Settings (R4/S9/T9)No!
Username is
root for both web and SSH access. Default password for web interface is
root and default password for SSH is
admin