Yes, Miracast - Wifi Display typically offers a free version with limited features, as well as a premium version with additional functionalities available for a subscription fee.

No, Miracast - Wifi Display does not require an internet connection as it uses Wi-Fi Direct technology to establish a direct wireless connection between devices.

You can contact support or send feedback through the app's help section or by visiting the official website, where you can find contact information and support resources.

You can manage or cancel your Miracast - Wifi Display subscription through the app settings or the app store from which you purchased the subscription.