I was getting an unsecure connection on some threads for a while And, about a month or 2 after I created a thread. about this issue. everything is back to secure, on my end. even on the threads that were non secure. it was from what I gather certain peoples collection banners.
I would clear your browsing history from the beginning of time setting to fix this, just remember if you clear ALL your browser cache and history you will automatically be logged out of all your online accounts and then will need to re-enter your usernames and passwords for each site you attend