I am not getting emails when someone posts to a thread I am subscribed to. The thread will have a check mark on the forum like I've been notified but I haven't been. I have checked my spam/trash/other folders and it is nowhere in my email and I checked my PC account and I am definitely signed up for notifications.

How can I fix this or is it some problem on PC's end? (I remember this happening once when software was upgraded).

Thanks