I know that this is an old request, but I am wondering (similarly)... is there a way to get the underlying data that makes up the landing page analytics (without using the analytics API) so that I can create my own analytics? And if so, what API would I use, and can I get it using an API key?
The Analytics API is a bit unique; profesional tier accounts do have API access, but only for integrations using OAuth for authentication. Accessing the Analytics API using an API key is only supported for enterprise tier accounts.