I am having the same issue. I completed the process yesterday. Did your matter get resolved?

Dear aspirant,

As you have mentioned that you have completed your phase registration but looking into your problem you can't download your confirmation page .

So, I would suggest you to open the website in the incognito mode and then try once. But even trying this it doesn't work out then there must be some server error in the site do kindly check it out little later .