I have the same issue, just by accessing to extensions panel on the twitch.tv dashboard as a classic streamer will do… (for me it force redirection from my page (which would be https://www.twitch.tv/jangberry/dashboard/extensions) to the one that would be for my old name (https://www.twitch.tv/mistercraft38/dashboard/extensions), and it’s impossible to don’t be redirected… I just see in URL “?redirect=true”, and it redirect anyways, even if I put false…)