App invalidated my password thereby dropping my yahoo everywhere that I had it sinqued. I tried new password then it told me I had an invalid id. I asked for new id and it gave the original one. I asked for new passed word and got the wrong id message again. Finally after an hour the sign in screen came on with my original screen name and a password I didn't input so I pushed enter and it let me in with an unknown password. Terrible app!!!! Fix your darn sign is my idea!