Canged url address by nistake

Hello,

By mistake I have changed my url in wordpress settings.

The worpress site is wdp.perene.org and I have change the settings to something diferent to link this to my website http://www.perene.org.

Now the problem is that I can´t log in to wordpress and the wordpress stie is all different.

I have tried the solutions in forum:

.wp-config.php
.functions.php
.redirect in wp-config
However nothing solved the problem to login again.

My server is has joomla installed but I can´t find a way to access the database to change the wp-configuration and change the url´s

I am trying to avoid to install the phpmyadmin because I don´t know if it will help to solve the issue.

Can anyone help me here, I have no mere ideas and I tired of looking for solutions.

Thanks