MyBB Community Forums

I'm getting that Authorization code mismatch error, and even if I try to upgrade the forum, it still doesn't go away.

It does it for all of my skins. Instead of posting, it does it when i try to send a PM.

Can someone help me?

ACP -> Templates -> Modify/Delete -> *Expand template set* -> Private Message Templates -> *EXPAND* -> private -> Revert. You will not lose your theme's look.