Mailbox Recovery Troubleshooter
Microsoft has an Exchange Online mailbox recovery troubleshooter available at the link below.
https://support.microsoft.com/en-us/help/20804/mailbox-recovery-in-exchange-online
Microsoft has an Exchange Online mailbox recovery troubleshooter available at the link below.
https://support.microsoft.com/en-us/help/20804/mailbox-recovery-in-exchange-online