Problem with the bbPress sidebar

Hello,

I contact you because though my last theme worked fine with it, this theme seems uncompatible with the plugin WP Tweaks, as the sidebar I crated for my bbPress forum (different than the default sidebar) unfortunately isn’t displayed : the website’s regular sidebar continues to be displayed on my forum’s pages.
Would it be possible to change that ? 🙂

I am using the last version of WP and of bbPress.
Many thanks in advance,
Mael.