This is an Android/iOS Native app based on the core Opencart functionalities. The customization done on the web needs to be performed in an App using mobile native technologies. To know about the core available functions please check

Android app: https://play.google.com/store/apps/details?id=com.iamretailer

iOS app: https://apps.apple.com/in/app/iamretialer/id1499472510

Furthermore, raise the support ticket with us OR drop an email to support@iamretailer.com.