Clear history and Website data is grayed out on iPad

If your iPad is not remotely managed by a company/school/institute (should be this case, you must contact their IT admin/supervisor), see this paragraph:

"When there's no history or website data to clear, the button to clear it turns gray. The button might also be gray if you have web content restrictions set up under Content & Privacy Restrictions in Screen Time.

To visit sites without leaving a history, turn Private Browsing on".

(extracted from this support article:--> Clear the history, cache, and cookies from Safari on your iPhone, iPad, or iPod touch ).

Regards

Giulio