Change a regular admin into a super admin

General
1

Hi,
My IT person left the company and is not reachable.
He is the only super admin.
I am a regular admin.
How can I change my status to a Super Administrator?
I am paying the bills and own the account, but could not change his settings so far…
Many thanks, Gavriel

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(topic deleted by author)

3

I generally follow this guide from :search:

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