You can reset your password at any time by submitting a Password Reset Request here and entering the email address associated with your account. An email will be sent to that address with a unique link which will allow you to reset your account password.
For your security, that link will only be valid for 30 minutes, after which time you'll need to submit another password reset request.
Tip: If you can't remember your password but have previously linked your mobile phone number with your Konsole account, try logging in via your mobile phone number instead! Once you're in, you can easily reset your password.