I have read on Reddit:
"Here's how to delete the account. Since the merge with yahoo, tumblr has script errors now(thanks yahoo).
So what you do is first cancel your Yahoo account by going here:
https://login.yahoo.com/account/delete-userThen after, just simply go to tumblr and change your password by going here:
https://www.tumblr.com/forgot_passwordOnce your password is changed, go straight to the delete account page for tumblr."
I don't have Yahoo account and i can't delete tumblr (if i click delete account there is a message "there's nothing therere").
Please help.