In order to help you, we need more details. Such as OC version used, 3rd party extensions installed, website URL.
Override Engine * Integrated VQMod * Unused Images Manager * Instant Option Price Calculator * Number Option * Google Rich Snippets * Google Tag Manager * Export/Import Tool * SpamBot Buster * Survey Plus
You or your developer are the only ones that can figure that out. Look over what you uploaded vs. what is on the server. If this is all a 'basic' install, just re upload everything and don't overwrite your config.php files.