Login with token results in invalid access token error message on checkout

[Zwnow]

Hello everyone,

I stumbled upon an issue with the Sumup.loginWithToken method.

This is my function:

Future<void> initializeAndLoginSumUp() async {
    final isStillLoggedIn = await Sumup.isLoggedIn;
    if (isStillLoggedIn != null) {
      if (isStillLoggedIn) {
        _isLoggedIn = true;
        notifyListeners();
        return;
      } else {
        //final response = await Sumup.loginWithToken(apiToken);
        final response = await Sumup.login();
        final message = response.message;
        if (message != null) {
          if (message['loginResult'] == true) {
            _isLoggedIn = true;
          }
        }
        notifyListeners();
      }
    }
  }

It is called everytime before I make an transaction within my application. Once a session expires and I relog with the line that is currently commented out, the login succeeds but when trying to process a checkout, it results in "Invalid access token" error and fails.

It works fine with the regular login method though!

Hope I was able to explain my issue somewhat understandable.

Best regards

[sstasi95]

Hi,

Check this issue, it might be a wrong grant type.

[Zwnow]

Hey, thanks for your answer. Unfortunately I don't use the API calls in my App. I was trying to make it work with the things the SDK natively provides. If I have to do it using URL requests & parameters, why would I use the SDK in the first place?

[sstasi95]

I meant that the token might have been generated in a wrong way, as discussed in that thread. Also, check that your OAuth app has all the required scopes, I think you need the 'payments' scope.