While I was using Safari on a 2018 iPad pro, I inadvertently opened up a second window. Now, none of the multitasking gestures work, and I can't resize or drag the sencond window, nor can I swipe up from the bottom to bring up the task manager. Safari itself still seems responsive in both windows. When I hold down the power button, siri starts. When I hold down the power and volume up buttons, nothing happens.
I've also tried connecting my iPad to a Mac that's not the one I usually use it with. Itunes asks if I want to allow the computer to access information on that ipad. When I click"continue", it tells me to respond on the ipad, but nothing is displayed on the ipad.
Not sure what to try next.