Can't Edit My Post

I'm not sure if it's just me, but I can't edit my post. Everytime I try to edit it, I'm back to my profile. It's been like 3 days. I already log out and log in, but the problem still there. Please help fix it. I need to edit a few of my challenges. Also the spoiler tag is not working for more than 3 days. Please also fix it. Thank you in advance.