Problem with creating OAuth access token
Hi guys,
I'm trying to create an Adobe Sign API, but I'm already failing at creating OAuth access token.
Here are my configurations:

When I'm trying to create an access token based on the settings by calling https://secure.eu2.echosign.com/public/oauth?redirect_uri=https://localhost/&response_type=code&client_id=xxxxxxxxxxxxxxxx&scope=user_login:self+agreement_write:account (of course with the ) I'm just getting redirected to https://secure.adobesign.com/public/userMessage with an error "Unable to authorize access because the client configuration is invalid: invalid_request".
I also tried in Postman and got the same error page. What am I doing wrong?
