Why does my fetch request return 200 on pc but 400 on ios

Question

I'm communicating to an API to update a state in my application. Everything works fine on PC. But on iOS the network request is 400 and the API does not return anything. Why? I'm running both through CORS anywhere and I've made sure to activate it both on my PC and my iOS device. One of the APIs that I'm communicating with in another file does work on both devices.

Home.js

import React, { useEffect, useState } from "react";
import { View, Text, SafeAreaView, ScrollView } from "react-native";
import { Divider } from "react-native-elements";
import BottomTabs from "../components/home/BottomTabs";
import Categories from "../components/home/Categories";
import HeaderTabs from "../components/home/HeaderTabs";
import RestaurantItems, {
  localRestaurants,
} from "../components/home/RestaurantItems";
import SearchBar from "../components/home/SearchBar";

const YELP_API_KEY =
  "x";

export default function Home({ navigation }) {
  const [restaurantData, setRestaurantData] = useState(localRestaurants);
  const [city, setCity] = useState("City");
  const [activeTab, setActiveTab] = useState("Delivery");

  const getRestaurantsFromYelp = () => {
    const yelpUrl = `https://api.yelp.com/v3/businesses/search?term=restaurants&location=${city}`;
    const corsUrl = `https://cors-anywhere.herokuapp.com/${yelpUrl}`;

    const apiOptions = {
      headers: {
        Authorization: `Bearer ${YELP_API_KEY}`,
      },
    };

    return fetch(corsUrl, apiOptions)
      .then((res) => res.json())
      .then((json) => {
        console.log("JSON:", json.businesses);
        setRestaurantData(json.businesses);
      })
      .catch((e) => console.log(e));
  };

  useEffect(() => {
    getRestaurantsFromYelp();
  }, [city, activeTab]);

  useEffect(() => {
    console.log("Restaurant Data Updated", restaurantData);
  }, [restaurantData]);

  return (
    <SafeAreaView style={{ backgroundColor: "#eee", flex: 1 }}>
      <View style={{ backgroundColor: "white", padding: 15 }}>
        <HeaderTabs activeTab={activeTab} setActiveTab={setActiveTab} />
        <SearchBar cityHandler={setCity} />
      </View>
      <ScrollView showsVerticalScrollIndicator={false}>
        <Categories />
        <RestaurantItems
          restaurantData={restaurantData}
          navigation={navigation}
        />
      </ScrollView>
      <Divider width={1} />
      <BottomTabs />
    </SafeAreaView>
  );
}