Correct Password is not accepted upon entering the Settings

Avast Free Antivirus Program version: 24.12.9725a (build 24.12.9725.903)

I am trying to change some settings on Avast Free Antivirus. I am already signed in. But every time I tried to enter the Settings the “correct password”, it kept on saying “wrong password”. I typed it one by one making sure it is what I typed. I even copied and pasted it. Still “wrong password”. What??? Please help.