account safe? I changed the password promptly but unsure if this cancels previous access of other devices immediately or if it has limited impact. Been impossible to ask Yahoo by phone as they say they have no one available and they will get back to me but as yet they havent

the i pad did not have a password to access/use it, the i pad also alerted to new messages and by clicking the relevant icon on the ipad opened e mails. Having changed my password I was hoping that stopped pretty much all activity.