I understand that you need to access to the console is required to install the Vinchin plugin and open access for Vinchin on ports 29203 and 29204

You will have to contact Sangfor Supports, the reason are below  

Sangfor HCI only provides platform console access.
Default username and password are admin. Administrator will be prompted to change
default password upon first login. If the default password has not been changed for one
month, administrator will be forced to change it

There is no default login and password for SSH
In order to access SSH, you have to enter your current admin password + Sangfor secret key.

Which the secret key is hold by Sangfor Supports  

I understand that you need to access to the console is required to install the Vinchin plugin and open access for Vinchin on ports 29203 and 29204

You will have to contact Sangfor Supports, the reason are below  

Sangfor HCI only provides platform console access.
Default username and password are admin. Administrator will be prompted to change
default password upon first login. If the default password has not been changed for one
month, administrator will be forced to change it

There is no default login and password for SSH
In order to access SSH, you have to enter your current admin password + Sangfor secret key.

Which the secret key is hold by Sangfor Supports