Source: https://support.apple.com/en-sg/guide/ipad/ipad63d30b5a/14.0/ipados/14.0#iPad715e3eec
Force-restarting your iPad can fix a number of issues. If your iPad is unresponsive or slow, do try the above.
If you still have issues after force restarting your iPad, please submit a ticket at: https://scgssict.freshdesk.com/support/tickets/new