Hi there
I am facing similar issue as raised here Unable to test token flow using OpenID connect playground
I am trying this in the https://www.openidconnect.net/ and have also verified that the code returned in step 1 can be used to obtain the token via postman. Can you please assist as to why the same workflow does not work in the playground?
I also observed some strange behaviour where the client_id and client_secret when requesting token are reverting back to the default rather than using the values provided in the configuration. However even after overriding these values with the correct ones, the operation still returns Exchange could not be performed error.
Thanks