Yes of course, it should be available :)
The upload is however to be used with manual-upload as you have set it up, however it requires you to first select a file.
So what is the purpose?
We usually initiate the upload as soon as you use file dialog to locate the file and select it. In case that is not desired, you can put manual-upload option where someone would select the file and then you initiate the upload from there.
If it still does not work, could you post the embedding code here (of course feel free to remove any tokens or other info that you might not want to post publicly)