As you have explained, it looks like you are entering the wrong password. So you must try to reset the password and then login.
If that doesn’t work and it keeps showing you the same error message. in this case, this could be browser related issue. so you should reset the cookies and cache of your browser. Here is what you need to do.
Sometimes, outdated cookies or cache data in your browser can prevent you from signing in. Here’s how to fix this:
- Open your browser and navigate to Settings > Privacy > Clear Browsing Data.
- Select Cookies and Cache and clear them.
- Restart your browser and try signing in again.
Once you change these settings on your yahoo mail account. it will start working fine on your devices.