These still work sometimes even after they start saying "Sorry all rewards have been claimed"
Check your inventory and who knows, maybe you'll be one of the lucky ones. Sometimes they will show up hours or up to a day later. It's not always instant or even all at once. You might notice them showing up 2-3 at a time over a day.
If you get told "Whoa, friend! You've reached the collection limit for now" you can't collect any more of this specific item or items in general. You'll need to try again later when your counter has reset.
NOT EVERYONE WILL GET THESE. IF YOU DO GET SOME, YOU ARE NOT GUARANTEED TO GET ALL OF THEM! If you do, fantastic! If not, try again later or try the next post.