Need to Flutter Expert To setup already purchased "fluxstore multi vendor - flutter e-commerce full app"

I bought an app whose name is "fluxstore multi vendor - flutter e-commerce full app" .This app connects to WordPress's dokan plugin.I have connected but some errors in it which I am not able to solve.If there is any flutter expert who can help me to launch this app well then please bid Here is that link: I purchased this app from.
https://codecanyon.net/item/fluxstore-multi-vendor-flutter-ecommerce-full-app/25013325