Read Photovoltaic Battery voltage charge

Hello, I got a login from Azzurro Support. Is there an easy way to test it?
I would like to do this by a curl command like

curl --location --request POST “https://third.zcsazzurroportal.com:19003” --header “Client:USERNAME” --header “Authorization:Zcs xxxxx”…

I tried also with an own python script to monitor my battery, but every command I tried returns an “NOT AUTHENTICATED”

I also asked Azzurro Support but they just brushed me off with “there has to be an issue in your header” but they are not telling what is wrong…