I followed the instruction on Preparing your app to be the default browser or email client. I have acquired the permission from Apple. The entitlement is included in the provisioning profile. mailto is specified in URL Schemes. But I downloaded my app from TestFlight and enter Setting > MyApp, the switch that could enable my app to be the default email app was not there. I have no clue what I did it wrong. Does anyone know how to configure the app properly?

I followed the instruction on Preparing your app to be the default browser or email client . I have acquired the permission from Apple. The entitlement is included in the provisioning profile. mailto is specified in URL Schemes. How can I preview if my app is enabled to be set as default email client successfully?

I recently found that when I run an app on an iPhone, if I swipe from the right edge, these tools will show on the screen. But they won't show if I run other apps. I have no idea how to enable this function, and I can't find relevant information on the internet. I'm using XCode 13.1 and iOS 15.1.