Welcome back to FH! Although the game is not as active as it used to be, I believe there's still some roleplay groups lingering around. I usually just sit in The Grounds and do things in the background on my PC. While some find this boring, I find it relaxing. FH has been a constant in my life since 2012 so it's like a second home to me.
I'd say the best time to play is usually early in the morning or late at night for me, which is during the day/afternoon in US time.
Regardless of the lack of activity, I hope you make some friends and have a good time! If you ever see me online, feel free to chat. c: