Universal Control iPad time out error
When I try to establish Universal Control between my iMac and my iPad Pro, I get an error message
"Unable to Connect to 'iPad Pro' The device timed out."
iMac (Retina 5K, 27-inch, Late 2015) MacOS Monterey 12.3.1
Universal Control is checked in the Displays control panel.
iPad Pro (10.5-inch) iPadOS 15.4.1
Cursor and Keyboard is switched on.
Suggestions are greatly appreciated.
iMac 27″, macOS 12.2