I've applied for both my titles.
I think one will definitely get rejected, but the other has a chance.
There are criteria, they want something that expresses "one single idea" (so my 2 story collection is probably out), and they want something between 5,000 and 20,000 words (this is rough, I can't find the criteria right now).
They accept fiction and non-fiction, and there is a quality assessment involved.
They say it takes around two weeks, and you will only get a response if you are accepted.