Activation lock Gmail and Password forgotten

So I had this tablet once and I had this apple Id/cloud account and I dont remember neither the email nor the password so I created a new apple Id on my android to log in with that account on the tablet and it would not work but the problem is, is that it's on activation lock and like I said previously I dont remember the email nor the password. I want to log in with the new apple id and it won't let me the apple id I am using now is the one i was talking about the new one. Any help?