Mode demo
How to get out demo mode on my ipad
iPad, iPadOS 15
Question marked as
There is no 'demo mode'.
Where did you get the iPad? If I had to guess, I'd say you purchased a unit that was intended for use in a store display. Those units are not intended to be sold at all. Either someone at the store messed up bad, or you purchased an iPad that was stolen from a store display.
Return it and get your money back.