You are directed to another site to get the API and the free version application that you have to create does not have the full features unless you pay some more from 10$ per month for Plus version to 1000$ + per year. Quite tricky, just not the right way to do it. No wonder the site doesn't seem right.
Please read all details before buying, its already written here and on our website too.
For those who do not wish to pay can use FREE service as well.
Requires a 3rd party commercial service to function.