Hello everyone, I am developing a parking app where users can find and pay for parking. Instead of directly paying with real money, users can reload their points or stars balance and then pay with that virtual money. Would using Apple's IAP be compulsory or can I integrate my third-party payment system within the app? If not, what if I direct the user to a website? Thank you!

Hello everyone, I’m developing an app using Flutter. Users can establish a websocket connection in order to receive order requests from the server. However, when I lock the screen, the socket connection disconnects. I have Background Process and Background Fetch enabled through Xcode. Is there a way to keep the app alive even if it is in background? I only need the websocket connection to stay alive. Thank you!