If your iPad is frozen to the point that you can't reboot it the normal way, perform a forced restart. Charge the battery.
Is your iPad not responding, not powering on, or just generally being a nuisance? Sometimes a hard reset is necessary, and it ...
To use Sign In with Apple, you simply need to select the option when asked to log into a participating app or website.
To lock apps on your iPad, you can set its Screen Time feature for limiting app usage to passcode-protect apps, and customize ...