www programming

Hello!
Thank you for your plugin.
I have a small problem.
Forum opens in the frame, only to the home page.
On the other pages of the site 404 error.
Help me please!
Website: http://diablo-clan.ru/

as already answered, please take a look to this:
https://wordpress.org/support/topic/err ... nto-phpbb/

please do not ask same questions at wp.org and also here maybe