Sidecar won't work on Mac OS Catalina
I am using a Macbook Air 2017 running mac OS Catalina and I am trying to use my ipad pro 2018 3rd generation as a second display. According to the website both devices meet the system requirements for Sidecar and I have followed all the instructions, the devices are connected both on Bluetooth and by Usb and on my Apple id but when I got to system preferences and display the ipad is not listed. I've been trying to fix this for two days now and would really appreciate some help!
iPad Pro, iPadOS 15