This StoreProduct represents an SK1 product

i have a flutter app that about daily horoscope and tarot cards and i’m trying to implement it but i’m kinda lost in the documents and tutorials i have purchase function page like this in code

import 'package:flutter/services.dart';
import 'package:purchases_flutter/models/offering_wrapper.dart';
import 'package:purchases_flutter/purchases_flutter.dart';

class PurchaseFlutterAPI {
// initialize function to be called to initialize our purchase_Flutter plugin
  static Future init() async {
    await Purchases.setLogLevel(LogLevel.debug);
  }

// gets a list of offerings from RevenueCat and stores it in a list for use in our app
  static Future<List<Offering>> fetchOffers() async {
    try {
      final offerings = await Purchases.getOfferings();
      final activeOffering = offerings.current;

      return (activeOffering == null) ? [] : [activeOffering];
    } on PlatformException catch (e) {
      return [];
    }
  }
}

and a subscripiton page in this

import 'package:flutter/material.dart';
import 'package:horoscope101/subs.dart';

class SubsPage extends StatefulWidget {
  const SubsPage({super.key});

  @override
  State<SubsPage> createState() => _SubsPageState();
}

class _SubsPageState extends State<SubsPage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: _buildAppBar(),
      body: Column(
        children: [
          ElevatedButton(
              onPressed: () {
                PurchaseFlutterAPI.fetchOffers();
              },
              child: Center(
                child: Text("Get Offers"),
              ))
        ],
      ),
    );
  }
}

AppBar _buildAppBar() {
  return AppBar(
    backgroundColor: Colors.transparent,
    elevation: 0,
    leading: BackButton(
      color: Color(0xFF9932CC),
    ),
    title: Text(
      "Your Future Is At Your Hands",
      style: TextStyle(fontSize: 18, color: Color(0xFF9932CC)),
    ),
    centerTitle: true,
  );
}

and in main.dart i have api

final _configruation =
    PurchasesConfiguration("ios_api_key")
      ..observerMode = false;

Future main() async {
  WidgetsFlutterBinding.ensureInitialized();

  await Purchases.configure(_configruation);
  runApp(const MyApp());
}

what am i doing wrong ? thanks for all your help