An API call is every time you interact with our API/Portal. So adding an input, getting predictions from a public or a custom model, training a custom model etc.
Our support department will reach out to you (at your provided email) as soon as we can with an acknowledgement of your request and follow up accordingly. If you need any specific help, please send an email to firstname.lastname@example.org
We have extensive documentation for using our API and Portal. Please refer to https://docs.clarifai.com/.