Have you set super password?
[CS01]super password level 3 cipher ?
STRING<1-53> Ciphertext password string
[CS01]super password level 3 cipher yoursecretkey
then after you authenticate at level 0, type "super" to get to level 3
<CS01>super
Please input the password to change the privilege level. Press CTRL_C to abort.
Password:
User privilege level is 3, and only those commands can be used
whose level is equal or less than this.
Privilege note: 0-VISIT, 1-MONITOR, 2-SYSTEM, 3-MANAGE