During the previous livestream, Kabam decided to (poorly) do things a little differently. These included having viewers go to an outside site to enter a giveaway, as well as if watching the livestream live on twitch, be given twitch drops.
Well, it seems like (according to the forums and reddit), lots of people that claimed the twitch rewards, attached their account, but never actually received the rewards in-game. From posts here, numerous people took to open a Kabam support ticket where Kabam told them to contact Twitch. Twitch rightly told them they dont control how in-game rewards work for a game they literally have no control over.
Eventually, we got this comment on the forums -

So I sent a message to Kabam explaining I was part of the group that claimed rewards but they never showed up in my account.

In response to my support ticket, they say they're investigating, but the ticket closed before they had any answer for me. Opened another ticket, and just got this response:

"I understand you have not received the recent Twitch Drops rewards in your account. After reviewing the related information, I see we have completed the investigation for missing Twitch Drops reward. At this time, all rewards have been successfully sent to qualifying accounts. We are no longer able to assist with the Twitch Drops rewards from our stream on January 31st. While we cannot guarantee support for Twitch Drops, if you encounter any future issues, please be sure to contact us within 72 hours for a chance at resolution."
These rewards are sadly anything significant, but it's just another example of sloppily handled things in a long line of recent messes. Get your heads out of your you-know-whats and figure sh- out.
I'm tired.