Unable to create local account on Powerwall Gateway

Hi, I am trying to configure Tesla Powerwall in Home Assistant, and it is looking for the password to the Gateway. The system is 1st Gen Powerwall, so i tried to enter the last 5 digits of the system, but this is not working. I am getting the message

Authentication failed with error: Access denied for resource https://192.168.x.x/api/login/Basic: bad credentials: Login Error

I then looked at trying to login to the gateway, and create a customer account, but the gateway landing page does not seem to allow this any more.

Is there a way to monitor the Tesla Powerwall’s in Home Assistant