You can reset your password by clicking, 'Forgot Password' on the log-in page here. You must be logged out to see this option. Once you click 'Forgot Password', you will receive an email containing instruction to reset your Metaintro password.
If you don't receive an email or the reset process fails, check if you initially signed up using your Google or another social media account. If so, try logging in with that authentication method instead.
At this time we do not support this feature. If you need additional assistance, please email support here.