fix(#45): Re-add email

src/routes/api/subscribe/+server.ts

@@ -50,6 +50,9 @@ export const POST: RequestHandler = async ({ request, cookies, locals: { safeGet
 	if (stripeCustomerId) {
 		// If the user has a Stripe customer ID, attach it to the checkout session
 		stripeCheckoutSessionObject.customer = stripeCustomerId;
+	} else {
+		// If the user doesn't have a Stripe customer ID, create a new customer with their email
+		stripeCheckoutSessionObject.customer_email = userEmail;
 	}
 
 	// Create a subscription checkout session with Stripe