Here's where I describe setting up a signature.Is that you that always talks about a signature? I don't know how to do that and I can't see a signature...I can't see anyones signature.
If you're viewing the forums from a phone, I'm not sure how to get them visible. I seem to recall someone saying that working in landscape mode shows them. In any case, make sure you have signatures set to display in your preferences.
Preferences can be reached by clicking on your name at the top of the page, clicking on the silhouette/gear icon, then clicking on "Preferences". In the "Content options" section you'll see a checkbox for "Show people's signatures with their messages". Make sure that's checked.