In order to track registrations with Google Analytics, you need to create a new goal and configure it.
- Go to the View panel and click on Goals
- Click on New Goal in order to create new specific goal
- In Goal setup choose Custom
- In Goal description enter Registrations
- In Type choose Destination then click on Continue
- In Goal details add the following path: /my?registered=true. This will track registrations as conversions for your Google Analytics property.