iOS inAppBrowser "Return to Merchant" button does not return back with iDeal, Bancontact and FPX

[vladms]

Describe the bug
I tried paying with iDeal in the example app. The iOS can open the payment link in two ways:

1. Opening safari as a different app
2. Opening InAppBrowser

After authorising the payment, the browser should redirect user to the app. This happens only when Safari is opened as a different app. The "Return to Merchant" button gives me this log every time I tap it:
Deep Link does not contain valid required params. URL params: {
"redirect_status" = succeeded;
"setup_intent" = "<.....>";
"setup_intent_client_secret" = "<......>";
}

To Reproduce
Steps to reproduce the behavior:

1. Download the example app
2. Change the stripe publishable key
3. Pay with iDeal
4. The inAppBrowser is opened
5. Authorise or decline the payment
6. Back to merchant is "blocked". Does not take the user back to the app

Expected behavior
After the payment was authorised/declined, the inAppBrowser should open the app

Smartphone / tablet

• Device: Simulator iPhone 11 Pro Max

• OS: 14.5

• Package version: 2.0.2

• Flutter version 2.5.2

• Device: Simulator iPhone X

• OS: 15.1

• Package version: 2.0.2

• Flutter version 2.5.2

Additional context
Here is a video of the issue:
Uploading Simulator Screen Recording - iPhone 11 Pro Max - 2021-11-23 at 11.42.46.mp4…

[remonh87]

Thanks for reporting I think I can reproduce it. The interesting thing is that on the example app the success callback is received. When I print the received routes in the material app I get: ?payment_intent=pi_3Kxxxxxxxx&payment_intent_client_secret=pi_3Kxxxxxx_secret_xxxxxx&redirect_status=succeeded null . I think the return to merchant button not working is something specific to that site though and won't happen in production. Will come back to you on this.

[remonh87]

Other question can you still upload your video :) ? just to make sure the problem is the same

[jamesblasco]

I think the error is because the example app right now has an invalid urlScheme setup in main.dart
Stripe.urlScheme = 'flutterstripe';

You should ensure a scheme that correctly opens back the app

[vladms]

The urlScheme is correct because it works when I open the Safari app.
https://user-images.githubusercontent.com/11149275/144453291-56a20bb9-e5c6-4d38-8459-8464ddb2fe71.mp4

@remonh87 I have uploaded the video. Can you reproduce it ?

[remonh87]

@vladms I can reproduce it and I will raise a question to Stripe for advice since when I run it in Safari it works like it should be.