I change a login email address but 1Password still uses the old one at login.

Hello archal! 👋

I'm sorry to hear that you're having trouble signing into websites. When you changed your login email address for the websites that you use did you also save the new email address in 1Password? If you open the 1Password app, and click on the Login Item for one of the websites where you're seeing the old email address being filled in, do you see the new email address or the old one?

I look forward to hearing from you. 🙂

-Dave