Displaying a Metabox linked to post settings for all users

It’s hard to give a precise answer without seeing the metabox code itself and how it works, but most likely you’d want to change the current_user_can function to look for the read capability. All users — contributors, editors, regular users — have this capability.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)