So I'm having a small issue with my SMF 2.0.15 forum. Following the tutorial for the HTTPS conversion yields a bug I didn't expect.
I followed the tutorial exactly as it should but I'm running into an issue replying to threads and creating new posts. Shoutbox from SimplePortal still works, login works, log out works. Creating a thread and responding to a thread are dead. When you click the "post" button, it just takes you to the "create a new thread" screen and its blank. Everything you typed is gone.
All I did was add the htaccess code to force HTTPS (which I do have a certificate for, it came with my hosting) and that's when the issue started. I'm still running without https on my site so it stays usable.
Do you have pretty urls enabled is go to the settings and update pretty urls root.
can't believe I forgot about that..... Noob mistake lol and I've been using SMF for years
Glad you have it figure out!