First, ensure that your device is not in "Low Power Mode".
Read this article for more information on how to connect to the new iPad app that runs on iOS versions 13 and above.
Read this article for more information on how to connect to the legacy iPad app that runs on iOS versions below 13.
Additionally, you must verify that you are connecting your keyboard with an authentic Apple adapter. Third party adapters will not work. There are two kinds of Apple adapters that will work.
- Lightning to USB Camera Adapter (for iPads with Lightning ports)
- USB-C to USB Adapter (for iPads with USB-C ports)
Please read this article for more common troubleshooting solutions.