Cordova-plugin-fcm customization

I'm looking for talented web/hybrid app developer familiar with cordova plugin, hybrid app(vue) and asp.net core/c# development we create a portal marketplace, where shop owners can advertise their projects to sell online. In this first face, the shopkeeper will only announce the project and be able to meet the consumer online. Well, the shopkeeper makes the announcement like this one: [login to view URL] The consumer accessing and enjoying this ad / project, he will click on the green "LOJA ONLINE" button, then this screen will appear: [login to view URL], where the consumer fills in his name and phone, to logar chat Then the Owner of this ad receives the notification on his cell phone by the application [login to view URL] to start the service with this consumer, the service can also be done through the web through the address: [login to view URL] The server side was developed with asp.net core + singalR The agent side consists of 2 part app and web The client side was developed with vue+signalR Please check image file The developer has updated the android side of corodva-plugin-fcm You should develop code for iOS that implements the same functionality as android code in cordova-plugin-fcm The goal is to build an app for iOS