as you have seen you are not going to be able to get much support here for your version of phpbb. as was mentioned, it is not even the same phpbb that is provided here and it is also so old that it is no longer supported here.
I would suggest that you first replace your phpbbseo version with an actual phpbb.com version of the board and then upgrade it to the current version of phpbb.
if you wish , you can send me a PM and I will help you with the conversion back to phpbb. then we can get you upgraded if you wish.
I am available for custom work on a donation basis. Please send me a PM with your needs.
Premium phpBB 3.2 Styles
OK, so what's the speed of dark?