When I am trying to deploy the suite commerce changes to the sandbox environment using "gulp deploy" command. Instead of asking me for the NetSuite User Name first, it is directly asking me to enter the NetSuite password. When I enter the password, it is exiting out. Please assisting me with this. Thanks in Advance.

use

gulp deploy --to

or run before

gulp clean

to delete .nsdeploy file

i think you have to manually delete the .nsdeploy. it seems it is not included in the gulp clean

using gulp deploy --to will prompt the username

After you perform the above just add the key

password: pwd

and will prompt for password on subsequent commands