How can I make corrections to a profile when the manager is inactive?

My family tree has several profiles that were created by a manager who is no longer active.  He created them three years ago.  Unfortunately, that is also the last time he was online.  By all accounts, he has abdicated his management.  I don't know the reason.  He either lost interest, lost his password or lost his life.  How can I become the new manager for these long dormant profiles?


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