Simply starting at the basic, easiest point... the keyboard output:
1. Can you swap the keyboard being used? Say an old keyboard from an iMac?
2. Rather than actually typing the password, can you copy the password from the password manager you are certainly using and paste it into the field?
3. In the highly unlikely and enormously dangerous circumstance that you are not using a password manager (
), can you type the password into TextEdit (for example) to verify the correct characters and then copy and paste that into the pw field?
I am assuming you are wanting to access this email account on a web browser rather than in Mail?
Otherwise, you should not need to be entering
any password.