iPad locking when used as a second screen

Hi lilbill_25,

The following steps address what you're describing specifically, and should provide a solution:

• "Before continuing, make sure that your Mac and iPad meet the Sidecar system requirements, including that each is signed with the same Apple ID.
• You can use Sidecar wirelessly, but to keep your iPad charged during use, connect it directly to your Mac with the USB charge cable that came with your iPad.

If you want your keyboard, mouse, or trackpad to control your Mac and iPad, with the iPad showing its own Home Screen and apps rather than the desktop and apps of your Mac, use Universal Control instead."

You can find these steps along with other information that may be helpful, here: Use an iPad as a second display for a Mac - Apple Support

If you have followed the steps correctly and you still have the issue, let us know if you get any specific alerts or error messages when trying, as those may help us determine what might be causing the issue.

We also recommend restarting your device and keeping it updated as those steps assure you have cleared out any minor software issues and are running the most current version.

Restart your iPad - Apple Support

Update your iPhone or iPad - Apple Support

If you still have questions, reach out to Apple Support directly, as this may require closer guidance: Get Support

Cheers!