Visit https://app.geckoboard.com/login.
Below the Password field, click Forgot your password?
On the next page, enter your Email address. Make sure it's the same one you used to sign up for Geckoboard!
Click Send reset instructions.
Check your email inbox for a new message from Geckoboard.
In the password reset email, click Reset Your Password. Enter your new password twice to confirm. Your password must be at least 6 characters long. Then click Change Password.
If you don't have access to the email associated with your account, get in touch.