no two puppies are the same, one of my bitches never ever did anything in the house from the day we had her at 8 weeks, my middle youngest bitch took a few weeks, and my latest puppy, being a dog, was clean night and day in just a few days. I tried the puppy spray and the pads, but to be honest neither of them worked, I also tried the crate method, but my puppy just pee'd in the crate then cried for me to get him out, and when I ignored him he tried to tip it up!
Is he actually weeing on the paper, if so I would be tempted to take it up altogether for a day to see if he gets the message that if the paper isnt there, he will have to go outside. I find leaving the back door open with access to the garden is the best way, taking puppy out as soon as he wakes up and immediately after food. You have to be patient and make sure you dont bring him in until he has done something, and using a word like wee wee time or someething usually helps as he will soon associate what you are asking him to do. And big hugs when he does what you ask.