Shoshana, before we can try to help I think we need to have some idea of what you are looking for help with.
I can’t help at all with chat. I rarely use it. I know @Emily_Coles and others have been working on improving it, but I think chat is still a work in progress.
Have you read Emily’s post where she attempts to walk through some of the basic steps for using TuDiabetes now that it is using the Discourse platform? If you have not, then please try to do so. Here is a link you can use to reach it: Getting started on our New Website!
Are you having problems with anything Emily addressed in her post? Or is it something else?