"Parameter redirect_uri does not match registered URI"

[BarryCarlyon]

@Felk

I noticed you did not properly encode your uri query params. So &redirect_uri=https://bitcornsync.com/twitchcallback should actually be &redirect_uri=https%3A%2F%2Fbitcornsync.com%2Ftwitchcallback , though all characters there look unambiguous as a query param value, so I don’t think it was the actual issue.

Doesn’t matter as the problem is in the POST for the token exchange. Not in the initial outbound redirect. As earlier noted in the thread, as the initial outbound redirect is not throwing the “Redirect URI Invalid” error