There’s no reason why you cannot set a ticker.
You can go to
Graphical Tickers and Trackers: Weight Loss, Trying To Conceive, Pregnancy... or some other ticker provider and then take the
BBCODE and paste it into your signature under User CP (Top right) Then "Edit Signature" from the menu on the left.
You can create a test thread in the tech support forum or write on an introduction thread in the
introductions section and paste your ticker
BBCODE into a post. If it comes up you got the right code!