Umm not sure what barry is talking about. I thought he understood from past threads but I guess he still doesnt. This has nothing to deal with being a bot or person. Twitch has had this issue for a long time that it wont let users send a whisper from TCP irc clients if they have never whispered them before using the browser. Again this has literally nothing to deal with being a bot and is also not some precaution to prevent spamming. Its a bug that twitch has ignored fixing for awhile but I am sure they’re aware of it since there has been a lot of threads about it. I am guessing there is some reason they havent been able to fix the bug they just havent come out and told us.
Again just to reiterate, this has nothing to deal with being a bot. I have tried to send whispers just through my regular irc client I have and it does not let me. I am not a bot and it still didnt work for me. So it has nothing to deal with being a bot.