Change the Login text

Hello list,

when I login as moderator the Login/Password window ask about Username (user@domain.net) and password.

Is it possible to change the text ?
Have found this https://github.com/jitsi/jitsi-meet/issues/5280 but there is no explaination where I could find it
The only file I found is /usr/share/jitsi-meet/libs/app.bundle.min.js but is there a better way to customize that?

Best regards,
Michael