When you purchase a subscription from the Malwarebytes store, you can choose to purchase a subscription to protect multiple devices.
To see how many devices your subscription protects, refer to your confirmation email or invoice, or see Manage subscriptions in your Malwarebytes Account.
If your license was purchased through a third party, such as an online merchant or retailer, you need to contact them for license details, or register your license key in your Account for details on available devices. Refer to Add a license key to your Malwarebytes Account for more information.