To access those data you don't actually need a root client, you can access it with a normal client, but if you need to automate changes on the client's proprietary profile then you must use a root client.

The main URL to the API page that return these data is https://api.lpgpofficial.com/profile/get.php, and the parameters of the request are just the obligatory parameters for the API, it'll load the client in and get the data about his proprietary. So the only thing you have to do to receive the profile data using the API is change the URL of the request and keep the default obligatory parameters. Just like this:

$.get({ url: "https://api.lpgpofficial.com/profile/get.php", data: {"client-key": "<your-client-key-here", "lpgp_mode": "t || f"} });

The proprietary data is returned in a JSON that reproduces the database table scheme, like the table:

Field	Type	Description	Unique
cd_proprietary	integer	The primary unique key reference of the proprietary in the database	Yes
nm_proprietary	string	The proprietary's name, use for the login and other methods inside the site	Yes
vl_email	string	The proprietary's e-mail address, it also can be	No
vl_password	string	The encoded proprietary's password