Ipad air 4 and sidecar

From this support document, Use your iPad as a second display for your Mac with Sidecar - Apple Support

Sidecar system requirements

Sidecar requires a compatible Mac using macOS Catalina and a compatible iPad using iPadOS 13:

Mac using macOS Catalina

• MacBook Pro introduced in 2016 or later
• MacBook introduced in 2016 or later
• MacBook Air introduced in 2018 or later
• iMac introduced in 2017 or later, plus iMac (Retina 5K, 27-inch, Late 2015)
• iMac Pro
• Mac mini introduced in 2018 or later
• Mac Pro introduced in 2019
•   

iPad using iPadOS 13

• iPad Pro: all models
• iPad (6th generation) or later
• iPad mini (5th generation)
• iPad Air (3rd generation)

The tech specs for the iPad Air (4th Gen) do not indicate that it supports Sidecar.

Ipad air 4 DOES support Sidecar. I figured out that even though I was signed into my apple account on the ipad I had to "finish setting up my ipad" with the notification and once I signed in again (already signed in) into my icloud account it was functioning properly. Make sure that bluetooth, handoff, and Wifi are on and Mac is not sharing its internet connection.

Did you click on your iPad in the finder to establish that it is a trusted device? I was having the same problem, but didn't realize that I had to do this. Once I did it worked like butter.

I have an iPad air 4th generation, and it does work with sidecar. I use it with my Macbook Pro 16" and it all works well.

Hi, you were able to connect your macbook pro with the new ipad air 4th generation that just came out? I seem to have the same problem of not being able to connect

@nickmikami yes, I was able to connect my new ipad air 4th generation (2020) to my Macbook Pro 16".