Firebase Functions Code - Works on localhost but not in production

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
const functions = require("firebase-functions");
const admin = require("firebase-admin");
const { firestore } = require("firebase-admin");
const Stripe = require("stripe");
const moment = require('moment');
const express = require('express');
const app = express();
const stripe = new Stripe(functions.config().stripe.testkey);
const cors = require('cors')({origin: true});
admin.initializeApp(functions.config().firebase);
const SENDGRID_API_KEY = functions.config().sendgrid.key;
const sgMail = require('@sendgrid/mail');
sgMail.setApiKey(SENDGRID_API_KEY);


app.all('*', function(req, res, next) {
    const allowedOrigins = ['https://www.website.com','https://www.website.com/', 'http://localhost:4200'];
    const origin = req.headers.origin;
        console.log(origin);
    if (allowedOrigins.includes(origin)) {
        console.error('allowed')
        res.setHeader('Access-Control-Allow-Origin', origin);
    }
    res.setHeader('Access-Control-Allow-Methods', 'POST, PUT, GET, OPTIONS');
    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Authorization, Content-Type, Accept");

    if (req.method === "OPTIONS") {
        res.send('ok').status(200);
        return
     }

    next();
});



exports.createStripeCustomer = functions.https.onCall((data, context) => {

        console.log('in Cloud Functions > index.js > createStripeCustomer()');
        //User auth data
        const user = data.userObj;

        console.log('stripe testkey:');
        console.log(functions.config().stripe.testkey);
        console.log('user obj:');
        console.log(user);
        console.log('user.email:');
        console.log(user.email);

        // Register Stripe user
        return stripe.customers.create({
            email: user.email
        }).then((customerArg) => {
            console.log(`Returned 'customer' object: `);
            console.log(customerArg);
            console.log('event.uid: ');
            console.log(user.uid);
            console.log('Saving customerID to users firestore at path: ');
            console.log(admin.firestore().collection('Users').doc(user.uid).path);
            //Save user's UID to customer in firestore 'Customers' collection (Change to batch when time permits)
            return admin.firestore().collection('Customers').doc(customerArg.id).create({
                customerID: customerArg.id,
                userUID: user.uid,
                displayName: user.displayName,
                email: user.email,
                photoURL: user.photoURL,
                date: Date.now()
            }).then(() => {
                console.log('Finished saving users UID to firestore Customers collection.');

                setTimeout(() => {
                    console.log('In setTimeout - saving customerID to user > uid in firestore');

                    //Save customerID to user's firestore (Rewrite as batch)
                    return admin.firestore().collection('Users').doc(user.uid).update({
                        customerID: customerArg.id
                    }).then(() => {
                        console.log('Finished saving customerID to users firestore. Now saving users UID to Customer collection...');
                    }).catch((err) => {
                        console.error(err);
                    });
                }, 5000);

            }).catch((err) => {
                console.error(err);
            });
        });
});