Hi,
In phpmyadmin, in your MODx database, let's say, modxdb, look for the table, modxdb
_users.
Observe the columns, there should be one named "
sudo", extreme right?
Observe the rows, and find your new admin user.
Click
edit, scroll down, find the
sudo field, change value from 0 to
1
If you could not copy the password for the admin to log in
try
http://rtfm.modx.com/display/revolution20/Resetting+a+User+Password+Manually
If you still need to change password in phpmyadmin, there are numerous tutorials online, simple hash stuff etc.
Cheers