If you are having access issues with your CU account, one thing you can check is if you've saved your account and password in your browser. If you've saved your credentials in the browser you are using, and your credentials have changed (username/email or password updated), this can cause the browser to try to log you in automatically with outdated information. You can solve this in the browser you are using by deleting or updating your saved credentials.
Each browser has a different process for this. Please select the link below for the browser you are using to find out how to manage your saved passwords in that browser.
Edge: Check out this article for information on how to modify your saved passwords in Edge. URL: https://support.microsoft.com/en-us/topic/edit-your-passwords-in-microsoft-edge-38ef988f-5a65-4c6a-9db8-937995d3ae31
Firefox: Check out this article for information on how to modify your saved passwords in Firefox. URL: https://support.mozilla.org/en-US/kb/password-manager-remember-delete-edit-logins?as=u&utm_source=inproduct#w_managing-usernames-and-passwords
Chrome: Check out this article and click "Show, edit, delete, or export saved passwords" for information on how to modify your saved passwords in Chrome. URL: https://support.google.com/chrome/answer/95606
Safari: Check out this article for information on how to modify your saved passwords in Apple and Safari. URL: https://support.apple.com/en-us/105115