Activation lock

Check your web browser autofill entries and other records, or use Apple's iForgot service, or contact their Account Security team, or if you're the unit's original owner, click here and submit an unlock request.

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You will need to recover your Apple ID and password or provide Apple with proof of purchase of the device so they can help you turn off Activation lock.

Otherwise, there is no way to bypass Activation Lock.

See here: link-> How to remove Activation Lock - Apple Support