Well I watched the two hours only to not get the drops lol. First set I wasn’t able to get, and thankfully items I honestly wasn’t going to use, but I enjoy watching steams regardless, so not the biggest deal.
I knew how to fix this before, although still a pain in the -Yoink!- I’ve gotten them to drop before.
I’m having an issue with the most recent twitch halo drop. I think it’s probably the same issue you’re describing. Hopefully they’ll offer a fix.
I tried relinking a few times today to see if it would help. I’m still waiting on two drops to show.
Oh no not again! I also watched 2 hours of a stream last night to get the “Get Milked” name & emblem but again it’s not showing up in my redemption history on halowaypoint even though it’s claimed in Twitch. I’m very reluctant to relink my accounts again as last time I got the dreaded “…” & only a few days ago it reverted back to my Twitch username on its own (I didnt relink it, it just appeared).
I am in the same boat as you. For promotional events such as this, I use this site.
https://www.haloinfinitenews.com/promotions
It’s been good to me, I just check it once or twice a day.
I still missing my HCS Launch Armor Coating and HCS Launch Weapon Coating.
All I wanted since last year was the milk emblem and I kept missing the windows for it. Now it’s finally back again, and I’ve been able to notice it, and now it doesn’t unlock. Granted, it’s still only been a few hours, but still. 
Still hasn’t showed up, gonna wait for a week I think.
Same issue for me too. I’ve contacted support and got nothing but crickets. This is really messed up. I followed the troubleshooting guide they provided and my twitch name was showing up fine and now it’s “…” after following instructions… wtf.
Only showed up in the game. Not in redeem history
I just checked today my stuff, changed colors, etc. And I noticed I got Midnight colors for vehicles! Date is June 3rd! I didn’t do anything, so it just… delayed.
Also I’ve read their was multiple Twitch drops. Where I can follow these? Some reason I get obsessed with skins and exclusive stuffs.
Did you disconnect and reconnect your twitch from halo waypoint? Or did you just do nothing and wait?
I did nothing. I read so many times if I didn’t get it I won’t, here and Steam forums. I just checked the day I earned the drop, it was May 3rd and I get it June 3rd. A slight delay?
A whole month. That’s just crazy.
About following drops. You can check the Twitch campaign page. There’s also this site:
https://www.haloinfinitenews.com/post/twitch-drops
I got the same issue. Claimed the Victory Shout Pose on Twitch and it didn’t show up on my redeemed items. Never had problems with drops before. I tried to relink my accounts and now it only shows the three dots instead of my Twitch name.
I can confirm these drops are currently broken (Victory Pose and Halo Europa Stuff) as a result of the API issue. It’s an issue that 343 will need to fix unfortunately considering Twitch doesn’t appear to be the issue.