Winbox is not connecting to my CCR

RouterOS Beginner Basics
1

I downloaded the winbox utility and configured my CCR 1016 12G correctly.Now after a couple of days when I again try to connect to the CCR the winbox is giving “Wrong username and password”.Pls note that I did not configure any username or password for my CCR.The username is admin and there is no password. :question: :question:

PLEASE HELP

2

You are sure you did not set any password or change the default user admin to something else?
Are you connecting to the right device?

3

Yes. I did connect to the right device.