I can't get the auto reply feature to work. Whenever I click on "enable" the text editor comes up, but it's inactive. Same thing for creating a signiture - text editor is inactive.
I just tried it and both features work fine for me. Try clearing out your browser's cache/browsing history. When you have done that, close out the browser and re-start it in a fresh session. If that doesn't do it, then try using a different browser.