Application development - Multi Platform - Rust, TypeScript

Redesign/modify an application which is available on GitHub. Change the logos, names according to another service provider. It's a VPN application, so instead of the original provider change the integration to our services/servers - OpenVPN - WireGuard We have api backend where you can authenticate, get details about users, get server list, types, etc. Everything is already written in the app. You don't have to extend it with features, "just" change it to cooperate with another VPN service provider. The login must be changed, because right now it asks for only an account key, but we use username/password. The application is mostly written in Rust, TypeScript. It can be built to iOS, Android, Windows, Linux, so you must be familiar with building applications like this. I need the modified application for both platforms. If you need help, or api documentation contact me. The Wireguard is not yet ready on the backend, it's depends on you what needed (this should be clear for you from the code) on backend, another team will do it. You have to modify this application as clearly as you can, because we will keep update it from github. You must use our GitLab server and I will give you tickets. You must be available later, because you will get more projects to keep this application updated.