Thank you,
- DISABLE_HOOKS did not solved issue.
- Then i went into VBseo, General Settings, Activate Plugin? Selected No and saved. Still see "Access denied."
- then i r enamed .htaccess into aaaaa in forum root directory, refreshed post deleting page, access denied still there.
- when im in admincp and go to thread moderating page, i approve some, i now see: Forbidden, You don't have permission to access /modcp/moderate.php on this server.