Following Nordigen's Quickstart details here https://nordigen.com/en/account_information_documenation/integration/quickstart_guide/ where my VB.NET desktop calls the Nordigen API, to let my customers choose their account then login so I can retrieve transaction details. My chosen component for the various web requests is Chilkat using Chilkat.Rest objects.
Going well until Step 4.2. I open a browser window with the url provided to me from the API, go through the end-user authentication process but once that is complete I am struggling to return 'control' to my VB.NET application. My redirect uri is http://localhost but I simply get "localhost refused to connect". There's obviously something missing but I'm unsure what. Managed this before with the HMRC MTD API for oAuth where you provide a port on ListenPort and all magically works. No oAuth needed this time however.
Any help/pointers gratefully received