I lost my admin account

I lost my admin account

Support,

I have lost access to my admin account. The domain is tuabogado.co .

The user account I set up for admin was gustavo@tuabogado.co

I have been trying to change the admin account to gerencia@tuabogado.co .

I am unsure what I did wrong, but the login for gustavo@tuabogado.co returns " no such account".

Can you give me back admin control with either the old account or my own email?

Thank you,      

Gus