2
Rather easy
- You have to close site in order to get auth-page
- Successfully authenticated as admin, you can jump to <site-url>/admin.php
For p.1 you have to have shell access or phpMyAdmin, or any other form of interactiong with your base and execute this command
UPDATE `xoops_config` SET `conf_value` = '1' WHERE `conf_name` = 'debug_mode' AND conf_modid = 0;