Visit your Twitch Settings page while logged in. If your account isn't connected, click the "Connect" button for Twitch under "Other Connections". Please also make sure that the sub-account you’re linking with Twitch is the one that you want to receive the Drop on. Complete the process on Twitch and you will be redirected back to your Twitch Settings page. If your account is already connected, this page should say "Your Path of Exile account is currently linked to your Twitch account."

We’ve noticed that a lot of people are failing to claim their rewards despite earning them. It is important to make sure that your account is correctly linked and that you redeem your rewards here

After you've accumulated enough watch time to earn your Drops, you must redeem them from your Twitch Inventory before the promotional period ends.

If you’re planning to stream Path of Exile 2 and want to enable Twitch Drops for your viewers, you can do it via your Twitch Creator Dashboard here.