I had the message “The accessory may not be supported” pop up on my (admittedly very old) iPad air. The problem is that the dismiss button doesn’t work, my screen is reacting to me pressing the button but not closing the message.
If it helps, the home, power buttons still work along with the screenshot function.
iPad Air, iOS 12
Hello truly290,
Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with dismissing a message regarding an unsupported accessory. To start, this article goes over the reasons why you might see this message, and how to resolve it: If you see an ‘Accessory may not be supported’ alert
Is the accessory no longer attached? If it isn't, try restarting your iPad to see if that resolves the issue: Restart your iPad
We hope this helps.
Cheers!
Unable to dismiss message.
