hi wilhelmmass,

Welcome to the forums.

Have a look at this page: http://manual.b2evolution.net/FAQ_:_After_Installation#When_I_do_xyz_I_just_get_a_blank_page_or_only_a_half_page

Good luck

my pages don't go blank, it just that when I click the comment button (word) nothing happens

didn't find a blogs/conf/_advanced_config.php
I did find a blogs/conf/_advanced.php

but it didn't help :s

The _advanced.php file for the setting is correct (in your B2evo version).
You do have a PHP memory problem as reported in the docs file.
Try one of the other options or contact your host.

Good luck