create vpn flutter app with admin larvel dashbaord

i am interested in developing a VPN app that offers both free and premium servers. The free servers will be available to all users, while the premium servers will offer faster speeds and additional features. To access the premium servers, users will need to subscribe to a Prime package or watch advertisements to earn data usage. This will allow users to calculate their data usage and decide whether to upgrade to the Prime package for faster and more reliable connections.
Please provide information on the support and maintenance services that will be available after the completion of the app development project.