Joomla Free extensions

I'm getting the following error when i try to save a k2 document and am publishing to 2 pages:

Graph returned an error: (#200) Requires either publish_groups permission and app being installed on the group, or manage_pages and publish_pages as an admin with sufficient administrative permission

Please help,

Shane

Hello Shane Taylor
In your Facebook application you need off Status (development) you can see image prnt.sc/kiessg and help me check it again
Best regards
Bach Pham

It gave the same error

Hello
Can you send me joomla admin and your Facebook account via contact form? So we can check it
Best regards
Bach Pham

Hello Bach Pham,

When I set application to development no one will see the posts on Facebook except me.
I want to show it to everyone who is following the page I am publishing one.

Hello Natanja Rorije
Today we have updated new version 6.5 and fixed problem only admin see the articles posted. Now please help me download new version and install in your site and help me check it again
Best regards
Bach Pham