Got it, combination of problems here really.
The button in group forums that say add new topic shouldn’t be there since in order to add a topic, you first have to pick a group to do it in. Think this is an update bug.
The function of this community landing page is to see the latest topics from all open forums (TAB only appears if you are a member).
Gonna try to remove that button, hopefully this week, I’ve told developer.
So how to post?
Go to a group, click on forum, scroll down.
About the latest activity stuff in footer,
All this stuff has been removed.