Your photo suggests that you are using a YouCast dongle/cable to connect your iPad to your Monitor/Display - instead of a regular Lightning to HDMI Adapter and cable.
If using a YouCast product and it requires a firmware update, you may need to use a specific App to perform the update:
https://apps.apple.com/app/youcast-updater/id1563134800
Otherwise, consider using a different HDMI Adapter - such as an Apple Lightning Digital AV Adapter:
https://store.apple.com/xc/product/MW2P3ZM/A

Unlike many third-party alternatives, this Adapter supports HDCP - which facilitates playback of copyright protected media when used with an appropriate Monitor or TV.