Subscription booking failing when using 3DS Auth card

[KrishnaSangaleKD]

Describe the bug
Subscription booking fails on mobile when 3DS auth required card added for payment.

To Reproduce
Steps to reproduce the behavior:

1. We have event booking mobile app, where we books events, subscription memberships and single payment memberships. When we test with 4242 test card all booking are working fine subscriptions also, but when I use 3DS auth card 4000002760003184 subscription booking is failing.
2. When I click on pay button backend response is saying booking failed and on stripe dashboard it is saying payment status as incomplete.
3. To handle this 3DS auth flow while booking subscription I've this code :

// receiving paymentIntentClientSecret and paymentMethodId from api final respJson = jsonDecode(response.body); if (respJson['result']['requires3DS'] == true) { final clientSecret = respJson['result']['clientSecret']; final paymentMethodId = respJson['result']['paymentMethodId']; await handleSubscription3DS(secretKey, paymentMethodId); }

Ex: clientSecret :- "pi_3SGZ9CCUgqGZPIgM08hxb3R6_secret_dYARGobvgSOQi6Q1NOdNHCooE"
paymentMethodId :- "pm_1SGZ9ACUgqGZPIgMkXgRkFf2"

and then I'm passing this value to this flutter code :-
// Confirm the payment with 3DS await Stripe.instance.confirmPayment( paymentIntentClientSecret: clientSecret, data: PaymentMethodParams.cardFromMethodId( paymentMethodData: PaymentMethodDataCardFromMethod( paymentMethodId: paymentMethodId, ), ), );

when debugger tries to execute this code it's throwing stripe error:-
_$LocalizedErrorMessageImpl (LocalizedErrorMessage(code: FailureCode.Failed, localizedMessage: There was an unexpected error -- try again in a few seconds, message: No such payment_intent: 'pi_3SFXbVL09zsvkIh81pf501Vs', stripeErrorCode: resource_missing, declineCode: null, type: invalid_request_error))

and payment status show incomplete on stripe dashboard

Expected behavior
It should handle 3DS auth while booking subscription if auth card is added.

Smartphone / tablet

• Device: iPhone 15 Simulator
• OS: 17.5
• Package version: flutter_stripe: ^12.0.2
• Flutter version 3.35.4

Additional context
I've tried in-app-paymentSheet flow as well at the end I'm getting same error :-
message: No such payment_intent: 'pi_3SFXbVL09zsvkIh81pf501Vs' with

[remonh87]

I can confirm that 3DS works (just checked it today on paymentsheet and also the web payment element).

I would check your backend implementation because it looks like the paymentintent is created with a different environment than the client. Make sure that both the serverkey and the clientkey are off the same environment (for example sandbox)