After initial set up of an email to sign in to that email is impossible with the error message "Something went wrong" The only help is sign in from another device. This is not helpful at all! This is particularly difficult when trying to set up an email on on an email programme such as Mozilla Thunderbird. Not but a few months ago this was never a problem as I have used this for years with Yahoo emails with absolute no problem. This has all changed now (January 2026) making it impossible to set up an email by not being able to sign in to the account on the yahoo pop up screen. This being tried on Linux and Microsoft windows on numerous browsers. On one Windows computer in your pop up sign on window it just keeps saying turn on cookies in your browser but the cookies ARE TURNED ON? So it is just ridiculous.