Yam Display for macOS Catalina.

Permission for Screen Recording
macOS Catalina requires permission from the user for screen recording. Yam Display records the screen of a Mac and displays it on an iOS device. Please allow screen recording in  > System Preferences > Security & Privacy > Privacy and restart Yam Display.
catalina_screen_recording

Installation of Yam Display driver and other permissions
macOS Catalina requires other permissions introduced since macOS Mojave. Please refer to Yam Display for macOS Mojave for the details.