Ah, thanks for showing me the validation request, I checked that out and realized my broadcaster ID was the same as the copy/pasted example!
I’m not sure what you mean by:
Here you seem not have URL encoded the redirect_uri and might have got an unexpected result
Is there something wrong with
redirect_uri=http://localhost
I just followed the docs and aren’t quite sure what url encoding is.
Thanks again, happy to make some progress today.