I followed these steps however you need to enter your details as you gave them in your account. 
I mean on my CoPR I had my birthplace shortened and it was giving me error because I entered it as is on CoPR. It worked after entering all the characters given during ITA/PR application.
Not sure you are having trouble for something similar.
	
		
			
		
		
	
				
			I mean on my CoPR I had my birthplace shortened and it was giving me error because I entered it as is on CoPR. It worked after entering all the characters given during ITA/PR application.
Not sure you are having trouble for something similar.
	