MyBB Community Forums

I have mybb 1610 I think and I got these problems:
1. After logging in it still shows me that I need to log in.
Like, I log in and I see the logging in screen then it goes back to the index page and still asks me to log in.
2. I don't have this when posting on my forum:

Please help!

Try setting in the admin settings and configuration:

Cookie path > /
Cookie prefix > leave blank