Hi There,
We are really sorry to say that, we are unable to help you in this issue.
In this case, you could contact with directly to phpBB OR use their community https://www.phpbb.com/community/
We are only available to answer the following below.
– Answering technical questions about item’s features
– Assistance with reported bugs and issues
– Help with included 3rd party assets
That means, we are only available to Answering technical questions about item’s features that including our item.
Moreover, please learn more the item support includes and not includes here https://themeforest.net/item/forumus-responsive-phpbb-31-style-theme/17057432/support
Best Regards,
ThemeLooks Support Team