As you know that this portal hasb been refreshed and now ning is providing different user experience. most of user may b facing trouble in chat. Following are steps for chat.
1. Look at right bottom you will see following windows. if it is closed then click this it will popup
2. Now Click on Main Room it will popup chat windows as following
3. To view all all users click on "Main Room > " where you will see all users. The use with green dot is online user as below Abu Aden
4. click "< Main Room " to go back to chat
5. You can search any member from 1st popup window, * (start ) will show all users.
6. You can go to chat from top menu . it will show separate chat windows as below