Using API to push Formidable Form entries to Zoho CRM (API documentation is not viewable)

Using API to push Formidable Form entries to Zoho CRM (API documentation is not viewable)

Trying to integrate Formidable Forms (on WordPress) with Zoho CRM to add a "Lead" every time the form is completed. This should be relatively simple, since Formidable has an API plugin that asks for just a few bits of information. These are:

Notification URL (from Zoho - to include AuthToken)
Username/Password (basic authentication)
Key/Value Pairs

UPDATE: Screen shot of input required added to this post.

Here's the problem - I can't find the documentation on the Zoho side to retrieve any of this information - I have no notion of how the notification URL is structured, nor the key/value pairs.

I tried the API (v2) documentation here:  https://www.zoho.com/crm/help/api/v2/ - however, no matter what browser I use, that just displays a menu to the left and blank white space to the right. So...no documentation.

I'll ask the most basic question first - how do I structure the Zoho notification URL to add fields from my form to the Zoho CRM (Leads module)?

And secondly - what is the appropriate Key/Value format to push data to Zoho CRM?

Finally - can we get an update to the API documentation so we can read it more easily? Really looking to dive into this!