Changing his password every 3 to 4 months is a good way to avoid security issue according to Kaspersky.
You could easily change your password by accessing "My settings":
You may have forgotten your password, it happens but don't care we could help you recovering your password :
Go on the login page, enter your email , click "Go ahead".
Hit the "Forgot password?", we will send you an email with a link allowing you to reset your password 😊
Once done, you could log-in. 🚀