ive had few streams with more then 5 chatters and the achievement has not been unlocked I got 422 followers out of the 50 and that achievement didn't unlock I will love the clip on my profile of people chatting to help me get it and it still doesn't work. the site was working great for my first achievements but now its really buggy
If you have had more than 5 people chatting at the exact same time, please reach out to our support via https://link.twitch.tv/GetSupport. They can help investigate if there's maybe something going on with the Build a Community achievement. Thanks.