Please read & comment on https://github.com/justintv/Twitch-API/issues/320
In short, this is not a bug (as evidenced by the 4XX response), you are now limited to fetching the 1600 latest or oldest followers.
Please read & comment on https://github.com/justintv/Twitch-API/issues/320
In short, this is not a bug (as evidenced by the 4XX response), you are now limited to fetching the 1600 latest or oldest followers.