To manage your membership (refund, cancel, give access, see members info etc) here are the steps.
1. Select Orders from the left-hand side men
2. Click on Subscriptions
3. See all the subscribers in your membership plans.
Remember you can have multiple plans, for example (beginner, intermediate, advanced or bronze, gold, sliver)
4. Manage your member's subscription
You can refund, see if they have an active membership (if they stop paying your monthly fees, they will lose access to your membership area).
If you would like to get more information, click on the customer's email to view the customer profile.