Cannot confirm my domain

Hi,

I've been trying to get an API key. When I get to the 'Domain Confirmation' page, I do everything correctly and add the file to my domain root. But the page still responds as 'Failed'. I can see the file if I go to the url shown on the page. Below is the text copied and pasted in the file:

Phrase: "#"
File: "ydnPx0Nyg.html"
Url to Check: "http://mysite.com/ydnPx0Nyg.html"

I noticed that the 'Phrase' has only one character but should have a phrase.

Can anyone help?

Thanks,

Rob