Server password what is it

Trying to access my cloud home from MacBook on wifi to restore a backup asking for server password for mycloud-xfzz8h
Name: system administrator
Password:

Tried admin and my user name and password no joy please help?

the my cloud home does not support registered user for time machine backup. you will need to use the guest account. see the article below.

https://support.wdc.com/knowledgebase/answer.aspx?ID=20358&lang=en