Hi AMonaem,
Thanks for letting us know more.
Just to clarify, does the same issue occur when using another cable or adapter? That information will help us isolate the issue.
Please also ensure the device is connected correctly, and as outlined in the following link, so we can make sure they're aren't any issues there: Connect iPad to a display with a cable
Connect iPad to a display with a cable
With the appropriate cable or adapter, you can connect your iPad to a secondary display, like a computer display, TV, or projector, where you can view the iPad screen.
To extend the workspace of your Mac by connecting it to your iPad, see Use iPad as a second display for your Mac.
Thanks!