1✯ - Go to your store Panel Admin.
2✯ - Access Extensions > Extension Installer and upload the file instagram.ocmod.zip.
3✯ - Go to Extensions > Extensions choose Modules in combo-box and scroll down until see Instagram click in Install and Edit.
*Needed create your Access Token (link in module!) Done!
*OC 18.104.22.168 ocmd maybe not work as well, but you can drag and drop folders "admin" and "catalog" from zip to your server
**Note: Please if this as useful, comment and rate! i appreciate ✯-✯