In this page Uber Drivers Api when I apply to get access to api I'm getting nothing from the SEND button by the form. And when I check the network and console I see that status returned fail.
As Matheus pointed out, he was using a browser which did not successfully sent the POST command to the server to submit his request.
Ensure that in your browser, through the Developer Tools, the POST command to the Uber API is getting POSTED successfully.
You can refer to a screenshot from a Firefox post tested for this.