myBB error 1.8.19

[olos123]

I have problem with mybb forums because when i want to update usercp (profile information i get error )

Authorization code mismatch. Are you accessing this function correctly? Please go back and try again.

I was search on internet  and i have solved login  now but i can't know how to fix this error for update profile informatio.
I use this theme 
So i was search and i was read that " https://community.mybb.com/thread-218862.html " and more 2 post but i don't find fix for my problem

[olos123]

Anybody?

[Serpius]

Anybody?

Dump that theme and use this THEME. 

That theme is more up-to-date and the author maintains it on a regular basis.

[Michael2014]

Agreed that it is a theme issue, you can save a copy of usercp_profile, then revert usercp_profile template back to original, and that will fix the problem, the issue is mostly likely the way the edit profile form is constructed, please let us know if this works.

[effone]

If you have included post key in all 4 mentioned template inside <form> </form> block this should work in any theme.

[olos123]

@serphius that is not solving ,i want use that theme not other.
@michael2014 you mean to i copy user_cp fropm theme whitch serphius recomend ,and that user cp to replace old user cp in my theme ?
@effone what you mean ? please explain me

[General_Talos]

Hi Olos123,

The issue that is the cause of this is new security features in the latest MyBB releases. The easiest way to get this fixed is to reach out to the developer of the theme and request they update it, as the only alternative is to dig through several templates and add the post key as effone suggested.

You follow the instructions here:

https://community.mybb.com/thread-218862.html

If you are not technically inclined enough to do this, and the developer of the theme does not respond, you may need to contact a freelance developer to fix that. Support for third party themes is hard on places like this because it's the responsibility of the developer of the theme, not the MyBB devs, to support it.