There are 2 ways in which you can reset your Gather password.
From Gather's Sign In page.
First, go to the Sign In page: https://go.gatherit.co/users/sign_in
Click on "Forgot your Password"
Type in the Email address you signed up with.
Now, go check your email.
Here is a copy of the email you will receive. Click on "Change my password".
Follow instructions as shown below, and click "Change My Password".
2. From within Gather.
First, sign in to your account, and select "Your Profile" from the "Account" dropdown menu.
Fill in requested info and click "Update"