Hey, so on my profile under Basic Userinfo there is "Last Seen: Hidden." I think I changed it to this setting years ago and now I don't know how to change it back. I feel like I'm missing something obvious.. Any help would be appreciated.

If you go to your dashboard and then to your preferences (link), if you disable the stealth mode option then that should change it from "hidden" to the actual time since you were last active on the site.

Thank you so much! I couldn't figure it out at all! All set now.