You need change two time with the same new email address in PHPMYADMIN
- Got to table: option
find the admin email there
edit the email directly
2 then go to table: users
change the email there directly as well
Now you can go back to your own wordpress website/wp-admin to reset a password request.
Of course you can change the user password in the PhpMyAdmin as well,
it is just in Table: users
But you need:
Next to user_pass choose MD5 from the drop down menu under Function.
Under Value replace the current encrypted password with the new password.
Now you can type normal text, it will be encrypted once saved.