PanelAdmin/Configuración/Google SEO URL
Busca Forum URL.Forum-{$url}
Cámbialo por:{$url}
RewriteRule ^Forum-([^./]+)$ forumdisplay.php?google_seo_forum=$1 [L,QSA,NC]
Substituir por:RewriteRule ^([^./]+)$ forumdisplay.php?google_seo_forum=$1 [L,QSA,NC]