In order to capture the HTTP/HTTPS message in iOS Simulator devices, please navigate to:
Certificate Menu -> Install Certificate on iOS Simulator
The following photo describes thee steps:
Install Root Proxyman Certificate on your machine: You can follow the macOS Guide.
Install Proxyman Certificate to all available simulators, which you have opened at least one time.
3. Reset the Simulator: Proxyman tries to reset all simulators, so it will load the new Certificate.
If you couldn't install the certificate, you can manually do it:
Export the Proxyman Certificate: Certificate Menu -> Export Proxyman Certificate -> Select Desktop folder and Save
Open the Simulator and drag the certificate and drop on the Simulator screen
Quit the Simulator and re-open
After the installation, we can start capture and view HTTPS message by following SSL Proxying Doc
See detailed steps to debug an application on iOS Simulator with Proxyman