If you mean on this Battlenet account, Magdaen, I am not seeing a Twitch account linked to it.
The Settings page on Twitch should indicate if you are linked to a Battlenet account, though I don’t believe it says which one. I’d check there first, but you might need to unlink and link your Battlenet account again.
I’m not sure if that will help for this drop, but hopefully it will.