I had this problem as well. You will need to get on the internet and log onto your account to make sure your yahoo account is available if so log out and try it on your phone again. I just done this after a week of getting mad because it kept saying server unavailable.
And all I had to do was log into my yahoo account to verify some personal information.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.