I've been having issues with the site while on my I phone.
I get logged out when I close safari when normally I'll remain logged in until I clear Internet cache/cookies. All other sites I stay logged in except here. I used to stay logged in this had begun about 2 weeks ago.
I also opt for email notifications for topics and tree mails but they never send notifications to my email or even spam folder. My email hasn't changed and everything looks correct. It's not a big deal anymore but perhaps it could be if it's happening to others too.