To begin, make sure that you are logged into your Mastermind.com account, and that you are viewing your dashboard.
On your dashboard, hover your mouse/pointer over your Name in the upper left-hand corner. Once here, click on the "Manage Subscriptions" option:
Once you click on "Manage Subscriptions", you will be taken to your Billing & Plan Usage page.
From here, you can:
Change your Plan
Cancel your Subscription
Update your Card
This page will also tell you what specific Plan Level you are currently on, and if you scroll down past the first box showing your payment details, it will show you all of the limits for the Plan Level you have.
Such as:
How many Masterminds you have/can create
How many Live Sessions you have/can have
Live Stream Duration
Live Stream Recording Duration
Subdomain count
PayPal Accounts Connected
Stripe Accounts Connected
and Other Limits in Your Plan