Ok so may be problem was with mesocolumn theme. Changing to customizer theme makes everything work fine.
Allowing guest users for not letting the forum topics load only. So i have disabled it. Giving you link of screenshot of forum reply.
View post on imgur.com
Ok i figured that one out to. Found few similar threads.
ok i figured it out but subforums are in one line.
How to put them in 1,2,3 subforums per line and rest in seaprate line.