phpbb blocks display problem

I am new to drupal and i have searched for this problem for almost a week and i am now started
to get mad.

The Integration works nice but the block showing a white box instead of normal display, i have re-installed it according to the install.txt but still have same problem(see attachment). Sorry for my bad English.

By the way, if i want it to look like this, http://drupalbridge.org/phpbbforum , is it just take the box " In the Drupal page. (Except for ACP)" in phpbb settings, since it doesn't work, did i miss out something?

Please help! Thanks!