Help Connecting PBI to Five9 using REST API

Hi all,

I'm having some difficulty connecting to Five9, the phone system my company uses. There is a REST API available for it, but I am not familiar with how to connect to the REST API without knowing the API URL beforehand. According to the documentation https://webapps.five9.com/assets/files/for_customers/documentation/apis/vcc-agent+supervisor-rest-api-reference-guide.pdf it sounds like I need to connect first to obtain the metadata needed to know my URL to continue to the next step.

I've tried connecting to https://app.five9.com/appsvcs/rs/svc/auth/login as a source in a blank query, but I don't think this is the right step. Any and all help is appreciated, I'm generally lost. Please let me know if I can provide more information.

Thanks in advance.