iCloud unlock

If they forgot the Apple ID (iCloud) password, enter the Apple (iCloud) ID, and click Forgot Password. See if they can get a Rescue or Notification email option if necessary. Link to contact Apple Support at the end of the 2nd article.

Apple ID - Manage  -     

Apple ID – Forgot Password  *      

Hey there,

See ☞ If you forgot your Apple ID email address or phone number - Apple Support

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See ☞ How to remove Activation Lock - Apple Support